78725760 has 128 divisors (see below), whose sum is σ = 253661760. Its totient is φ = 20766720.

The previous prime is 78725743. The next prime is 78725821. The reversal of 78725760 is 6752787.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251364 + ... + 251676.

Almost surely, 2^78725760 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 78725760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126830880).

78725760 is an abundant number, since it is smaller than the sum of its proper divisors (174936000).

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

78725760 is a wasteful number, since it uses less digits than its factorization.

78725760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 78725760 is about 8872.7538002584. The cubic root of 78725760 is about 428.5869607069.

The spelling of 78725760 in words is "seventy-eight million, seven hundred twenty-five thousand, seven hundred sixty".