78753994 has 32 divisors (see below), whose sum is σ = 131984640. Its totient is φ = 34944000.

The previous prime is 78753991. The next prime is 78754003. The reversal of 78753994 is 49935787.

It is not an unprimeable number, because it can be changed into a prime (78753991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196194 + ... + 196594.

It is an arithmetic number, because the mean of its divisors is an integer number (4124520).

Almost surely, 2^78753994 is an apocalyptic number.

78753994 is a deficient number, since it is larger than the sum of its proper divisors (53230646).

78753994 is a wasteful number, since it uses less digits than its factorization.

78753994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606.

The product of its digits is 1905120, while the sum is 52.

The square root of 78753994 is about 8874.3447082024. The cubic root of 78753994 is about 428.6381903508.

The spelling of 78753994 in words is "seventy-eight million, seven hundred fifty-three thousand, nine hundred ninety-four".