79128120 has 128 divisors (see below), whose sum is σ = 248832000. Its totient is φ = 20106240.

The previous prime is 79128109. The next prime is 79128143. The reversal of 79128120 is 2182197.

It is a super-2 number, since 2×79128120² = 12522518749468800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 330961 + ... + 331199.

It is an arithmetic number, because the mean of its divisors is an integer number (1944000).

Almost surely, 2^79128120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79128120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124416000).

79128120 is an abundant number, since it is smaller than the sum of its proper divisors (169703880).

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

79128120 is a wasteful number, since it uses less digits than its factorization.

79128120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 79128120 is about 8895.3988106211. The cubic root of 79128120 is about 429.3158762711.

The spelling of 79128120 in words is "seventy-nine million, one hundred twenty-eight thousand, one hundred twenty".