78408052 has 12 divisors (see below), whose sum is σ = 141640576. Its totient is φ = 37939320.

The previous prime is 78408037. The next prime is 78408061. The reversal of 78408052 is 25080487.

It is a super-2 number, since 2×78408052² = 12295645236869408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78407999 and 78408017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316038 + ... + 316285.

Almost surely, 2^78408052 is an apocalyptic number.

It is an amenable number.

78408052 is a deficient number, since it is larger than the sum of its proper divisors (63232524).

78408052 is a wasteful number, since it uses less digits than its factorization.

78408052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632358 (or 632356 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 78408052 is about 8854.8321271496. The cubic root of 78408052 is about 428.0096440020.

The spelling of 78408052 in words is "seventy-eight million, four hundred eight thousand, fifty-two".