78715488 has 48 divisors (see below), whose sum is σ = 207144000. Its totient is φ = 26173056.

The previous prime is 78715477. The next prime is 78715501. The reversal of 78715488 is 88451787.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×78715488² = 12392256102156288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 51763 + ... + 53261.

It is an arithmetic number, because the mean of its divisors is an integer number (4315500).

Almost surely, 2^78715488 is an apocalyptic number.

It is an amenable number.

78715488 is an abundant number, since it is smaller than the sum of its proper divisors (128428512).

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

78715488 is a wasteful number, since it uses less digits than its factorization.

78715488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059 (or 2051 counting only the distinct ones).

The product of its digits is 501760, while the sum is 48.

The square root of 78715488 is about 8872.1749306469. The cubic root of 78715488 is about 428.5683194695.

The spelling of 78715488 in words is "seventy-eight million, seven hundred fifteen thousand, four hundred eighty-eight".