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80931932 = 2247547787
BaseRepresentation
bin1001101001011…
…10110001011100
312122021202201222
410310232301130
5131204310212
612010352512
72001624104
oct464566134
9178252658
1080931932
11417583a4
122312b738
13139c8623
14aa6a204
157189c72
hex4d2ec5c

80931932 has 24 divisors (see below), whose sum is σ = 145092864. Its totient is φ = 39482352.

The previous prime is 80931881. The next prime is 80931943. The reversal of 80931932 is 23913908.

It is a cake number, because a cake can be divided into 80931932 parts by 786 planar cuts.

It is a junction number, because it is equal to n+sod(n) for n = 80931892 and 80931901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102443 + ... + 103229.

It is an arithmetic number, because the mean of its divisors is an integer number (6045536).

Almost surely, 280931932 is an apocalyptic number.

It is an amenable number.

80931932 is a deficient number, since it is larger than the sum of its proper divisors (64160932).

80931932 is a wasteful number, since it uses less digits than its factorization.

80931932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 80931932 is about 8996.2176496570. The cubic root of 80931932 is about 432.5536383073.

The spelling of 80931932 in words is "eighty million, nine hundred thirty-one thousand, nine hundred thirty-two".

Divisors: 1 2 4 47 94 188 547 787 1094 1574 2188 3148 25709 36989 51418 73978 102836 147956 430489 860978 1721956 20232983 40465966 80931932