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67392012 = 223171917387
BaseRepresentation
bin1000000010001…
…01001000001100
311200210212110110
410001011020030
5114223021022
610404240020
71445552112
oct401051014
9150725413
1067392012
113504a686
121a6a0010
1310c6773c
148d43ab2
155db300c
hex404520c

67392012 has 48 divisors (see below), whose sum is σ = 175271040. Its totient is φ = 20028672.

The previous prime is 67391971. The next prime is 67392019. The reversal of 67392012 is 21029376.

It is not an unprimeable number, because it can be changed into a prime (67392019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4818 + ... + 12569.

It is an arithmetic number, because the mean of its divisors is an integer number (3651480).

Almost surely, 267392012 is an apocalyptic number.

It is an amenable number.

67392012 is an abundant number, since it is smaller than the sum of its proper divisors (107879028).

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

67392012 is a wasteful number, since it uses less digits than its factorization.

67392012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17430 (or 17428 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 67392012 is about 8209.2637915954. The cubic root of 67392012 is about 406.9453973156.

The spelling of 67392012 in words is "sixty-seven million, three hundred ninety-two thousand, twelve".

Divisors: 1 2 3 4 6 12 17 19 34 38 51 57 68 76 102 114 204 228 323 646 969 1292 1938 3876 17387 34774 52161 69548 104322 208644 295579 330353 591158 660706 886737 991059 1182316 1321412 1773474 1982118 3546948 3964236 5616001 11232002 16848003 22464004 33696006 67392012