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84238960 = 24513107757
BaseRepresentation
bin1010000010101…
…10001001110000
312212111210010111
411001112021300
5133031121320
612205311104
72042006431
oct501261160
9185453114
1084238960
1143606a83
1224265494
13145b5950
14b28b488
1575dea5a
hex5056270

84238960 has 80 divisors (see below), whose sum is σ = 213173856. Its totient is φ = 30772224.

The previous prime is 84238943. The next prime is 84238963. The reversal of 84238960 is 6983248.

84238960 = T272 + T273 + ... + T806.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×842389603 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84238963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110902 + ... + 111658.

Almost surely, 284238960 is an apocalyptic number.

84238960 is a gapful number since it is divisible by the number (80) 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 84238960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106586928).

84238960 is an abundant number, since it is smaller than the sum of its proper divisors (128934896).

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

84238960 is a wasteful number, since it uses less digits than its factorization.

84238960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 84238960 is about 9178.1784685198. The cubic root of 84238960 is about 438.3668104503.

The spelling of 84238960 in words is "eighty-four million, two hundred thirty-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 107 130 208 214 260 428 520 535 757 856 1040 1070 1391 1514 1712 2140 2782 3028 3785 4280 5564 6056 6955 7570 8560 9841 11128 12112 13910 15140 19682 22256 27820 30280 39364 49205 55640 60560 78728 80999 98410 111280 157456 161998 196820 323996 393640 404995 647992 787280 809990 1052987 1295984 1619980 2105974 3239960 4211948 5264935 6479920 8423896 10529870 16847792 21059740 42119480 84238960