79868880 has 480 divisors, whose sum is σ = 350977536. Its totient is φ = 15814656.

The previous prime is 79868821. The next prime is 79868909. The reversal of 79868880 is 8886897.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1506934 + ... + 1506986.

Almost surely, 2^79868880 is an apocalyptic number.

79868880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79868880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175488768).

79868880 is an abundant number, since it is smaller than the sum of its proper divisors (271108656).

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

79868880 is a wasteful number, since it uses less digits than its factorization.

79868880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 79868880 is about 8936.9390733069. The cubic root of 79868880 is about 430.6514013808.

The spelling of 79868880 in words is "seventy-nine million, eight hundred sixty-eight thousand, eight hundred eighty".