79229820 has 48 divisors (see below), whose sum is σ = 224894880. Its totient is φ = 20837376.

The previous prime is 79229803. The next prime is 79229849. The reversal of 79229820 is 2892297.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4665 + ... + 13424.

It is an arithmetic number, because the mean of its divisors is an integer number (4685310).

Almost surely, 2^79229820 is an apocalyptic number.

It is an amenable number.

79229820 is an abundant number, since it is smaller than the sum of its proper divisors (145665060).

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

79229820 is a wasteful number, since it uses less digits than its factorization.

79229820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18174 (or 18172 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 79229820 is about 8901.1134135006. The cubic root of 79229820 is about 429.4997246618.

The spelling of 79229820 in words is "seventy-nine million, two hundred twenty-nine thousand, eight hundred twenty".