79978016 has 48 divisors (see below), whose sum is σ = 167005440. Its totient is φ = 37635840.

The previous prime is 79978001. The next prime is 79978043. The reversal of 79978016 is 61087997.

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, 35615 + ... + 37793.

It is an arithmetic number, because the mean of its divisors is an integer number (3479280).

Almost surely, 2^79978016 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 79978016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83502720).

79978016 is an abundant number, since it is smaller than the sum of its proper divisors (87027424).

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

79978016 is a wasteful number, since it uses less digits than its factorization.

79978016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 79978016 is about 8943.0428825987. The cubic root of 79978016 is about 430.8474651469.

The spelling of 79978016 in words is "seventy-nine million, nine hundred seventy-eight thousand, sixteen".