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71952008 = 2329992
BaseRepresentation
bin1000100100111…
…10011010001000
312000101112121012
410102132122020
5121404431013
611050103052
71532403422
oct422363210
9160345535
1071952008
1137684677
122011aa88
1311ba316b
1497ad812
1564b41a8
hex449e688

71952008 has 12 divisors (see below), whose sum is σ = 134955015. Its totient is φ = 35964008.

The previous prime is 71951983. The next prime is 71952019. The reversal of 71952008 is 80025917.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 35976004 + 35976004 = 5998^2 + 5998^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=5998.

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 22493 + ... + 25491.

Almost surely, 271952008 is an apocalyptic number.

It is an amenable number.

71952008 is a deficient number, since it is larger than the sum of its proper divisors (63003007).

71952008 is an frugal number, since it uses more digits than its factorization.

71952008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004 (or 3001 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 71952008 is about 8482.4529471138. The cubic root of 71952008 is about 415.9243113037.

Multiplying 71952008 by its sum of digits (32), we get a square (2302464256 = 479842).

The spelling of 71952008 in words is "seventy-one million, nine hundred fifty-two thousand, eight".

Divisors: 1 2 4 8 2999 5998 11996 23992 8994001 17988002 35976004 71952008