78683408 has 20 divisors (see below), whose sum is σ = 160473360. Its totient is φ = 37270944.

The previous prime is 78683383. The next prime is 78683411. The reversal of 78683408 is 80438687.

It is a happy number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129110 + ... + 129717.

It is an arithmetic number, because the mean of its divisors is an integer number (8023668).

Almost surely, 2^78683408 is an apocalyptic number.

It is an amenable number.

78683408 is an abundant number, since it is smaller than the sum of its proper divisors (81789952).

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

78683408 is a wasteful number, since it uses less digits than its factorization.

78683408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258854 (or 258848 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 78683408 is about 8870.3668469799. The cubic root of 78683408 is about 428.5100914547.

The spelling of 78683408 in words is "seventy-eight million, six hundred eighty-three thousand, four hundred eight".