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319138080 = 2535592191
BaseRepresentation
bin10011000001011…
…010100100100000
3211020111220010220
4103001122210200
51123144404310
651400123040
710623425502
oct2301324440
9736456126
10319138080
11154166188
128aa66480
135116bb01
1430555d72
151d03e670
hex1305a920

319138080 has 144 divisors (see below), whose sum is σ = 1027966464. Its totient is φ = 83223040.

The previous prime is 319138073. The next prime is 319138081. The reversal of 319138080 is 80831913.

319138080 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3191380802 = 203698228212172800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (319138081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1670785 + ... + 1670975.

It is an arithmetic number, because the mean of its divisors is an integer number (7138656).

Almost surely, 2319138080 is an apocalyptic number.

319138080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 319138080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513983232).

319138080 is an abundant number, since it is smaller than the sum of its proper divisors (708828384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

319138080 is a wasteful number, since it uses less digits than its factorization.

319138080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 319138080 is about 17864.4361791801. The cubic root of 319138080 is about 683.3757171146.

Adding to 319138080 its reverse (80831913), we get a palindrome (399969993).

It can be divided in two parts, 31913 and 8080, that added together give a palindrome (39993).

The spelling of 319138080 in words is "three hundred nineteen million, one hundred thirty-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 59 60 80 96 118 120 160 177 191 236 240 295 354 382 472 480 573 590 708 764 885 944 955 1146 1180 1416 1528 1770 1888 1910 2292 2360 2832 2865 3056 3481 3540 3820 4584 4720 5664 5730 6112 6962 7080 7640 9168 9440 10443 11269 11460 13924 14160 15280 17405 18336 20886 22538 22920 27848 28320 30560 33807 34810 41772 45076 45840 52215 55696 56345 67614 69620 83544 90152 91680 104430 111392 112690 135228 139240 167088 169035 180304 208860 225380 270456 278480 334176 338070 360608 417720 450760 540912 556960 664871 676140 835440 901520 1081824 1329742 1352280 1670880 1803040 1994613 2659484 2704560 3324355 3989226 5318968 5409120 6648710 7978452 9973065 10637936 13297420 15956904 19946130 21275872 26594840 31913808 39892260 53189680 63827616 79784520 106379360 159569040 319138080