78108408 has 64 divisors (see below), whose sum is σ = 247968000. Its totient is φ = 22316256.

The previous prime is 78108367. The next prime is 78108413. The reversal of 78108408 is 80480187.

78108408 is nontrivially palindromic in base 11.

It is a super-2 number, since 2×78108408² = 12201846800588928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 24318 + ... + 27341.

It is an arithmetic number, because the mean of its divisors is an integer number (3874500).

Almost surely, 2^78108408 is an apocalyptic number.

It is an amenable number.

78108408 is an abundant number, since it is smaller than the sum of its proper divisors (169859592).

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

78108408 is a wasteful number, since it uses less digits than its factorization.

78108408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51681 (or 51671 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 78108408 is about 8837.8961297359. The cubic root of 78108408 is about 427.4637211442.

The spelling of 78108408 in words is "seventy-eight million, one hundred eight thousand, four hundred eight".