76388644 has 12 divisors (see below), whose sum is σ = 133887600. Its totient is φ = 38135048.

The previous prime is 76388629. The next prime is 76388693. The reversal of 76388644 is 44688367.

It is a junction number, because it is equal to n+sod(n) for n = 76388594 and 76388603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11854 + ... + 17125.

It is an arithmetic number, because the mean of its divisors is an integer number (11157300).

Almost surely, 2^76388644 is an apocalyptic number.

It is an amenable number.

76388644 is a deficient number, since it is larger than the sum of its proper divisors (57498956).

76388644 is a wasteful number, since it uses less digits than its factorization.

76388644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29642 (or 29640 counting only the distinct ones).

The product of its digits is 774144, while the sum is 46.

The square root of 76388644 is about 8740.0597251964. The cubic root of 76388644 is about 424.3031607244.

The spelling of 76388644 in words is "seventy-six million, three hundred eighty-eight thousand, six hundred forty-four".