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76280013 = 3247180331
BaseRepresentation
bin1001000101111…
…11000011001101
312022112102111200
410202333003031
5124011430023
611322540113
71614240465
oct442770315
9168472450
1076280013
113a070337
1221667639
1312a5a104
14a1b8ba5
156a6b743
hex48bf0cd

76280013 has 12 divisors (see below), whose sum is σ = 112527168. Its totient is φ = 49771080.

The previous prime is 76279997. The next prime is 76280033. The reversal of 76280013 is 31008267.

It is not a de Polignac number, because 76280013 - 24 = 76279997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76280033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89743 + ... + 90588.

It is an arithmetic number, because the mean of its divisors is an integer number (9377264).

Almost surely, 276280013 is an apocalyptic number.

It is an amenable number.

76280013 is a deficient number, since it is larger than the sum of its proper divisors (36247155).

76280013 is a wasteful number, since it uses less digits than its factorization.

76280013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180384 (or 180381 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 76280013 is about 8733.8429685906. The cubic root of 76280013 is about 424.1019338551.

The spelling of 76280013 in words is "seventy-six million, two hundred eighty thousand, thirteen".

Divisors: 1 3 9 47 141 423 180331 540993 1622979 8475557 25426671 76280013