79802172 has 42 divisors (see below), whose sum is σ = 209392568. Its totient is φ = 26599752.

The previous prime is 79802137. The next prime is 79802189. The reversal of 79802172 is 27120897.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 10768 + ... + 16599.

Almost surely, 2^79802172 is an apocalyptic number.

It is an amenable number.

79802172 is an abundant number, since it is smaller than the sum of its proper divisors (129590396).

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

79802172 is a wasteful number, since it uses less digits than its factorization.

79802172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27389 (or 27372 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 79802172 is about 8933.2061433732. The cubic root of 79802172 is about 430.5314719188.

The spelling of 79802172 in words is "seventy-nine million, eight hundred two thousand, one hundred seventy-two".