78800406 has 32 divisors (see below), whose sum is σ = 167533920. Its totient is φ = 24623616.

The previous prime is 78800399. The next prime is 78800413. The reversal of 78800406 is 60400887.

It is an interprime number because it is at equal distance from previous prime (78800399) and next prime (78800413).

It is a congruent number.

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, 26860 + ... + 29648.

It is an arithmetic number, because the mean of its divisors is an integer number (5235435).

Almost surely, 2^78800406 is an apocalyptic number.

78800406 is an abundant number, since it is smaller than the sum of its proper divisors (88733514).

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

78800406 is a wasteful number, since it uses less digits than its factorization.

78800406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 78800406 is about 8876.9592766893. The cubic root of 78800406 is about 428.7223767644.

The spelling of 78800406 in words is "seventy-eight million, eight hundred thousand, four hundred six".