78953632 has 12 divisors (see below), whose sum is σ = 155440026. Its totient is φ = 39476800.

The previous prime is 78953617. The next prime is 78953639. The reversal of 78953632 is 23635987.

It can be written as a sum of positive squares in only one way, i.e., 41938576 + 37015056 = 6476^2 + 6084^2 .

It is not an unprimeable number, because it can be changed into a prime (78953639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1233619 + ... + 1233682.

Almost surely, 2^78953632 is an apocalyptic number.

It is an amenable number.

78953632 is a deficient number, since it is larger than the sum of its proper divisors (76486394).

78953632 is a wasteful number, since it uses less digits than its factorization.

78953632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467311 (or 2467303 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 78953632 is about 8885.5856306717. The cubic root of 78953632 is about 429.0000778812. Note that the first 4 decimals are identical.

Subtracting from 78953632 its sum of digits (43), we obtain a cube (78953589 = 429³).

The spelling of 78953632 in words is "seventy-eight million, nine hundred fifty-three thousand, six hundred thirty-two".