78314392 has 16 divisors (see below), whose sum is σ = 158135040. Its totient is φ = 36145056.

The previous prime is 78314389. The next prime is 78314441. The reversal of 78314392 is 29341387.

It is a super-2 number, since 2×78314392² = 12266287988659328, which contains 22 as substring.

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, 376408 + ... + 376615.

It is an arithmetic number, because the mean of its divisors is an integer number (9883440).

Almost surely, 2^78314392 is an apocalyptic number.

It is an amenable number.

78314392 is an abundant number, since it is smaller than the sum of its proper divisors (79820648).

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

78314392 is a wasteful number, since it uses less digits than its factorization.

78314392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753042 (or 753038 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 78314392 is about 8849.5419090482. The cubic root of 78314392 is about 427.8391540478.

The spelling of 78314392 in words is "seventy-eight million, three hundred fourteen thousand, three hundred ninety-two".