79213820 has 24 divisors (see below), whose sum is σ = 190113504. Its totient is φ = 27158976.

The previous prime is 79213801. The next prime is 79213867. The reversal of 79213820 is 2831297.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282767 + ... + 283046.

It is an arithmetic number, because the mean of its divisors is an integer number (7921396).

Almost surely, 2^79213820 is an apocalyptic number.

79213820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

79213820 is an abundant number, since it is smaller than the sum of its proper divisors (110899684).

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

79213820 is a wasteful number, since it uses less digits than its factorization.

79213820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565829 (or 565827 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 79213820 is about 8900.2146041542. The cubic root of 79213820 is about 429.4708110607.

The spelling of 79213820 in words is "seventy-nine million, two hundred thirteen thousand, eight hundred twenty".