78712384 has 21 divisors (see below), whose sum is σ = 156335857. Its totient is φ = 39320704.

The previous prime is 78712373. The next prime is 78712393. The reversal of 78712384 is 48321787.

The square root of 78712384 is 8872.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1272384 + 77440000 = 1128^2 + 8800^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 70422 + ... + 71530.

Almost surely, 2^78712384 is an apocalyptic number.

78712384 is the 8872-nd square number.

It is an amenable number.

78712384 is a deficient number, since it is larger than the sum of its proper divisors (77623473).

78712384 is an frugal number, since it uses more digits than its factorization.

78712384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230 (or 1111 counting only the distinct ones).

The product of its digits is 75264, while the sum is 40.

The cubic root of 78712384 is about 428.5626861285.

The spelling of 78712384 in words is "seventy-eight million, seven hundred twelve thousand, three hundred eighty-four".