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76120013 = 76999887
BaseRepresentation
bin1001000100101…
…11111111001101
312022020022000202
410202113333031
5123441320023
611315303245
71613003144
oct442277715
9168208022
1076120013
1139a71102
12215aab25
1312a02338
14a17675b
156a39128
hex4897fcd

76120013 has 4 divisors (see below), whose sum is σ = 76137600. Its totient is φ = 76102428.

The previous prime is 76120007. The next prime is 76120021. The reversal of 76120013 is 31002167.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-76120013 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 (76120003) 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, 2756 + ... + 12642.

It is an arithmetic number, because the mean of its divisors is an integer number (19034400).

Almost surely, 276120013 is an apocalyptic number.

It is an amenable number.

76120013 is a deficient number, since it is larger than the sum of its proper divisors (17587).

76120013 is an equidigital number, since it uses as much as digits as its factorization.

76120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17586.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 76120013 is about 8724.6783894881. The cubic root of 76120013 is about 423.8052034021.

The spelling of 76120013 in words is "seventy-six million, one hundred twenty thousand, thirteen".

Divisors: 1 7699 9887 76120013