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80623972 = 221113592389
BaseRepresentation
bin1001100111000…
…11100101100100
312121201010022001
410303203211210
5131114431342
612000015044
71666202212
oct463434544
9177633261
1080623972
1141567a90
1223001484
131391b3c0
14a9c9cb2
1571288b7
hex4ce3964

80623972 has 48 divisors (see below), whose sum is σ = 168638400. Its totient is φ = 33240960.

The previous prime is 80623967. The next prime is 80623997. The reversal of 80623972 is 27932608.

It is a super-2 number, since 2×806239722 = 13000449722113568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32554 + ... + 34942.

It is an arithmetic number, because the mean of its divisors is an integer number (3513300).

Almost surely, 280623972 is an apocalyptic number.

It is an amenable number.

80623972 is an abundant number, since it is smaller than the sum of its proper divisors (88014428).

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

80623972 is a wasteful number, since it uses less digits than its factorization.

80623972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 80623972 is about 8979.0852540779. The cubic root of 80623972 is about 432.0042937959.

The spelling of 80623972 in words is "eighty million, six hundred twenty-three thousand, nine hundred seventy-two".

Divisors: 1 2 4 11 13 22 26 44 52 59 118 143 236 286 572 649 767 1298 1534 2389 2596 3068 4778 8437 9556 16874 26279 31057 33748 52558 62114 105116 124228 140951 281902 341627 563804 683254 1366508 1550461 1832363 3100922 3664726 6201844 7329452 20155993 40311986 80623972