78974132 has 24 divisors (see below), whose sum is σ = 143295264. Its totient is φ = 38053152.

The previous prime is 78974131. The next prime is 78974179. The reversal of 78974132 is 23147987.

It is a self number, because there is not a number n which added to its sum of digits gives 78974132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78974131) 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, 13343 + ... + 18329.

It is an arithmetic number, because the mean of its divisors is an integer number (5970636).

Almost surely, 2^78974132 is an apocalyptic number.

It is an amenable number.

78974132 is a deficient number, since it is larger than the sum of its proper divisors (64321132).

78974132 is a wasteful number, since it uses less digits than its factorization.

78974132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135 (or 5133 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 78974132 is about 8886.7391094822. The cubic root of 78974132 is about 429.0372040624.

The spelling of 78974132 in words is "seventy-eight million, nine hundred seventy-four thousand, one hundred thirty-two".