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70312508 = 2272511161
BaseRepresentation
bin1000011000011…
…10001000111100
311220022020121222
410030032020330
5121000000013
610551012512
71512434510
oct414161074
9156266558
1070312508
1136764912
121b66a138
131174ab46
1494a4140
15628d508
hex430e23c

70312508 has 12 divisors (see below), whose sum is σ = 140625072. Its totient is φ = 30133920.

The previous prime is 70312481. The next prime is 70312513. The reversal of 70312508 is 80521307.

70312508 is an admirable number.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1255553 + ... + 1255608.

It is an arithmetic number, because the mean of its divisors is an integer number (11718756).

Almost surely, 270312508 is an apocalyptic number.

It is an amenable number.

70312508 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

70312508 is a wasteful number, since it uses less digits than its factorization.

70312508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511172 (or 2511170 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 70312508 is about 8385.2553926520. The cubic root of 70312508 is about 412.7409217654.

It can be divided in two parts, 7031250 and 8, that multiplied together give a square (56250000 = 75002).

The spelling of 70312508 in words is "seventy million, three hundred twelve thousand, five hundred eight".

Divisors: 1 2 4 7 14 28 2511161 5022322 10044644 17578127 35156254 70312508