78993208 has 32 divisors (see below), whose sum is σ = 174735360. Its totient is φ = 32761440.

The previous prime is 78993191. The next prime is 78993259. The reversal of 78993208 is 80239987.

It is a super-3 number, since 3×78993208³ (a number of 25 digits) contains 333 as substring.

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, 21016 + ... + 24487.

It is an arithmetic number, because the mean of its divisors is an integer number (5460480).

Almost surely, 2^78993208 is an apocalyptic number.

It is an amenable number.

78993208 is an abundant number, since it is smaller than the sum of its proper divisors (95742152).

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

78993208 is a wasteful number, since it uses less digits than its factorization.

78993208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45547 (or 45543 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 78993208 is about 8887.8123292518. The cubic root of 78993208 is about 429.0717455619.

The spelling of 78993208 in words is "seventy-eight million, nine hundred ninety-three thousand, two hundred eight".