78394748 has 12 divisors (see below), whose sum is σ = 137275320. Its totient is φ = 39173232.

The previous prime is 78394717. The next prime is 78394759. The reversal of 78394748 is 84749387.

It is a super-2 number, since 2×78394748² = 12291473027967008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78394696 and 78394705.

It is a congruent number.

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, 2663 + ... + 12801.

It is an arithmetic number, because the mean of its divisors is an integer number (11439610).

Almost surely, 2^78394748 is an apocalyptic number.

It is an amenable number.

78394748 is a deficient number, since it is larger than the sum of its proper divisors (58880572).

78394748 is a wasteful number, since it uses less digits than its factorization.

78394748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12076 (or 12074 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 78394748 is about 8854.0808670353. The cubic root of 78394748 is about 427.9854349136.

The spelling of 78394748 in words is "seventy-eight million, three hundred ninety-four thousand, seven hundred forty-eight".