78850972 has 12 divisors (see below), whose sum is σ = 138052656. Its totient is φ = 39407360.

The previous prime is 78850943. The next prime is 78850991. The reversal of 78850972 is 27905887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11772 + ... + 17212.

It is an arithmetic number, because the mean of its divisors is an integer number (11504388).

Almost surely, 2^78850972 is an apocalyptic number.

It is an amenable number.

78850972 is a deficient number, since it is larger than the sum of its proper divisors (59201684).

78850972 is a wasteful number, since it uses less digits than its factorization.

78850972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9068 (or 9066 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 78850972 is about 8879.8069798842. The cubic root of 78850972 is about 428.8140604726.

The spelling of 78850972 in words is "seventy-eight million, eight hundred fifty thousand, nine hundred seventy-two".