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76512013 = 193139623
BaseRepresentation
bin1001000111101…
…11101100001101
312022222012202021
410203313230031
5124041341023
611331530141
71616225044
oct443675415
9168865667
1076512013
113a209676
1221759951
1312b0b8a6
14a23955b
156ab535d
hex48f7b0d

76512013 has 4 divisors (see below), whose sum is σ = 76553568. Its totient is φ = 76470460.

The previous prime is 76512011. The next prime is 76512017. The reversal of 76512013 is 31021567.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76512013 - 21 = 76512011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76512011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17881 + ... + 21742.

It is an arithmetic number, because the mean of its divisors is an integer number (19138392).

Almost surely, 276512013 is an apocalyptic number.

It is an amenable number.

76512013 is a deficient number, since it is larger than the sum of its proper divisors (41555).

76512013 is a wasteful number, since it uses less digits than its factorization.

76512013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41554.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 76512013 is about 8747.1145528111. The cubic root of 76512013 is about 424.5314568835.

The spelling of 76512013 in words is "seventy-six million, five hundred twelve thousand, thirteen".

Divisors: 1 1931 39623 76512013