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76881272 = 23132332141
BaseRepresentation
bin1001001010100…
…01110101111000
312100122222021112
410211101311320
5124140200042
611343455452
71622323436
oct445216570
9170588245
1076881272
113a441046
12218b7588
1312c0a9a0
14a2d3d56
156b39982
hex4951d78

76881272 has 32 divisors (see below), whose sum is σ = 161995680. Its totient is φ = 33939840.

The previous prime is 76881269. The next prime is 76881313. The reversal of 76881272 is 27218867.

It is a super-3 number, since 3×768812723 (a number of 25 digits) contains 333 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 13679 + ... + 18462.

It is an arithmetic number, because the mean of its divisors is an integer number (5062365).

Almost surely, 276881272 is an apocalyptic number.

It is an amenable number.

76881272 is an abundant number, since it is smaller than the sum of its proper divisors (85114408).

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

76881272 is a wasteful number, since it uses less digits than its factorization.

76881272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32183 (or 32179 counting only the distinct ones).

The product of its digits is 75264, while the sum is 41.

The square root of 76881272 is about 8768.1966218830. The cubic root of 76881272 is about 425.2133129867.

The spelling of 76881272 in words is "seventy-six million, eight hundred eighty-one thousand, two hundred seventy-two".

Divisors: 1 2 4 8 13 23 26 46 52 92 104 184 299 598 1196 2392 32141 64282 128564 257128 417833 739243 835666 1478486 1671332 2956972 3342664 5913944 9610159 19220318 38440636 76881272