78959172 has 24 divisors (see below), whose sum is σ = 184846816. Its totient is φ = 26232768.

The previous prime is 78959143. The next prime is 78959173. The reversal of 78959172 is 27195987.

It is not an unprimeable number, because it can be changed into a prime (78959173) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7033 + ... + 14400.

Almost surely, 2^78959172 is an apocalyptic number.

It is an amenable number.

78959172 is an abundant number, since it is smaller than the sum of its proper divisors (105887644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78959172 is a wasteful number, since it uses less digits than its factorization.

78959172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21747 (or 21745 counting only the distinct ones).

The product of its digits is 317520, while the sum is 48.

The square root of 78959172 is about 8885.8973660514. The cubic root of 78959172 is about 429.0101116389.

The spelling of 78959172 in words is "seventy-eight million, nine hundred fifty-nine thousand, one hundred seventy-two".