78394376 has 16 divisors (see below), whose sum is σ = 147163200. Its totient is φ = 39150864.

The previous prime is 78394369. The next prime is 78394387. The reversal of 78394376 is 67349387.

It is a happy number.

It is a super-2 number, since 2×78394376² = 12291356376858752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78394376.

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, 2021 + ... + 12683.

It is an arithmetic number, because the mean of its divisors is an integer number (9197700).

Almost surely, 2^78394376 is an apocalyptic number.

It is an amenable number.

78394376 is a deficient number, since it is larger than the sum of its proper divisors (68768824).

78394376 is a wasteful number, since it uses less digits than its factorization.

78394376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11588 (or 11584 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The square root of 78394376 is about 8854.0598597480. The cubic root of 78394376 is about 427.9847579514.

It can be divided in two parts, 783 and 94376, that added together give a palindrome (95159).

The spelling of 78394376 in words is "seventy-eight million, three hundred ninety-four thousand, three hundred seventy-six".