78590732 has 48 divisors (see below), whose sum is σ = 155457792. Its totient is φ = 34457280.

The previous prime is 78590731. The next prime is 78590737. The reversal of 78590732 is 23709587.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 78590732.

It is not an unprimeable number, because it can be changed into a prime (78590731) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 155993 + ... + 156495.

It is an arithmetic number, because the mean of its divisors is an integer number (3238704).

Almost surely, 2^78590732 is an apocalyptic number.

It is an amenable number.

78590732 is a deficient number, since it is larger than the sum of its proper divisors (76867060).

78590732 is a wasteful number, since it uses less digits than its factorization.

78590732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 78590732 is about 8865.1413976315. The cubic root of 78590732 is about 428.3417874285.

The spelling of 78590732 in words is "seventy-eight million, five hundred ninety thousand, seven hundred thirty-two".