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76904620 = 22513295787
BaseRepresentation
bin1001001010101…
…11100010101100
312100201011022021
410211113202230
5124141421440
611344155524
71622451502
oct445274254
9170634267
1076904620
113a457641
1221908ba4
1312c184c0
14a2dc672
156b4184a
hex49578ac

76904620 has 24 divisors (see below), whose sum is σ = 173923344. Its totient is φ = 28395456.

The previous prime is 76904603. The next prime is 76904693. The reversal of 76904620 is 2640967.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147634 + ... + 148153.

It is an arithmetic number, because the mean of its divisors is an integer number (7246806).

Almost surely, 276904620 is an apocalyptic number.

It is an amenable number.

76904620 is an abundant number, since it is smaller than the sum of its proper divisors (97018724).

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

76904620 is a wasteful number, since it uses less digits than its factorization.

76904620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295809 (or 295807 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 76904620 is about 8769.5279234403. The cubic root of 76904620 is about 425.2563528383.

The spelling of 76904620 in words is "seventy-six million, nine hundred four thousand, six hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 295787 591574 1183148 1478935 2957870 3845231 5915740 7690462 15380924 19226155 38452310 76904620