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319480080 = 24356831949
BaseRepresentation
bin10011000010101…
…110000100010000
3211021011021021120
4103002232010100
51123241330310
651411322240
710626351543
oct2302560420
9737137246
10319480080
1115437a127
128abb0380
135125b68a
143060485a
151d0aab70
hex130ae110

319480080 has 80 divisors (see below), whose sum is σ = 992347200. Its totient is φ = 85026304.

The previous prime is 319480019. The next prime is 319480081. The reversal of 319480080 is 80084913.

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

It is not an unprimeable number, because it can be changed into a prime (319480081) 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, 162946 + ... + 164894.

It is an arithmetic number, because the mean of its divisors is an integer number (12404340).

Almost surely, 2319480080 is an apocalyptic number.

319480080 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 319480080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496173600).

319480080 is an abundant number, since it is smaller than the sum of its proper divisors (672867120).

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

319480080 is a wasteful number, since it uses less digits than its factorization.

319480080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648 (or 2642 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 319480080 is about 17874.0057066120. The cubic root of 319480080 is about 683.6197400772.

The spelling of 319480080 in words is "three hundred nineteen million, four hundred eighty thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 683 1366 1949 2049 2732 3415 3898 4098 5464 5847 6830 7796 8196 9745 10245 10928 11694 13660 15592 16392 19490 20490 23388 27320 29235 31184 32784 38980 40980 46776 54640 58470 77960 81960 93552 116940 155920 163920 233880 467760 1331167 2662334 3993501 5324668 6655835 7987002 10649336 13311670 15974004 19967505 21298672 26623340 31948008 39935010 53246680 63896016 79870020 106493360 159740040 319480080