79238920 has 32 divisors (see below), whose sum is σ = 178922520. Its totient is φ = 31582720.

The previous prime is 79238917. The next prime is 79238923. The reversal of 79238920 is 2983297.

It is an interprime number because it is at equal distance from previous prime (79238917) and next prime (79238923).

It can be written as a sum of positive squares in 4 ways, for example, as 79174404 + 64516 = 8898^2 + 254^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (79238923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8340 + ... + 15100.

Almost surely, 2^79238920 is an apocalyptic number.

It is an amenable number.

79238920 is an abundant number, since it is smaller than the sum of its proper divisors (99683600).

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

79238920 is a wasteful number, since it uses less digits than its factorization.

79238920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065 (or 7061 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 79238920 is about 8901.6245708298. The cubic root of 79238920 is about 429.5161675360.

The spelling of 79238920 in words is "seventy-nine million, two hundred thirty-eight thousand, nine hundred twenty".