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72896996 = 22193130941
BaseRepresentation
bin1000101100001…
…01000111100100
312002011112212202
410112011013210
5122130200441
611122234032
71543420454
oct426050744
9162145782
1072896996
113816a657
12204b5918
1312144323
149977d64
1565ee19b
hex45851e4

72896996 has 24 divisors (see below), whose sum is σ = 138620160. Its totient is φ = 33415200.

The previous prime is 72896987. The next prime is 72897007. The reversal of 72896996 is 69969827.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13115 + ... + 17826.

It is an arithmetic number, because the mean of its divisors is an integer number (5775840).

Almost surely, 272896996 is an apocalyptic number.

72896996 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

72896996 is a deficient number, since it is larger than the sum of its proper divisors (65723164).

72896996 is a wasteful number, since it uses less digits than its factorization.

72896996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30995 (or 30993 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 56.

The square root of 72896996 is about 8537.9737643073. The cubic root of 72896996 is about 417.7372569493.

The spelling of 72896996 in words is "seventy-two million, eight hundred ninety-six thousand, nine hundred ninety-six".

Divisors: 1 2 4 19 31 38 62 76 124 589 1178 2356 30941 61882 123764 587879 959171 1175758 1918342 2351516 3836684 18224249 36448498 72896996