78971682 has 16 divisors (see below), whose sum is σ = 158224032. Its totient is φ = 26277120.

The previous prime is 78971623. The next prime is 78971687. The reversal of 78971682 is 28617987.

It is not an unprimeable number, because it can be changed into a prime (78971687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7944 + ... + 14867.

It is an arithmetic number, because the mean of its divisors is an integer number (9889002).

Almost surely, 2^78971682 is an apocalyptic number.

78971682 is an abundant number, since it is smaller than the sum of its proper divisors (79252350).

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

78971682 is a wasteful number, since it uses less digits than its factorization.

78971682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23393.

The product of its digits is 338688, while the sum is 48.

The square root of 78971682 is about 8886.6012625750. The cubic root of 78971682 is about 429.0327673691.

The spelling of 78971682 in words is "seventy-eight million, nine hundred seventy-one thousand, six hundred eighty-two".