78045992 has 16 divisors (see below), whose sum is σ = 152699040. Its totient is φ = 37326256.

The previous prime is 78045973. The next prime is 78046021. The reversal of 78045992 is 29954087.

It is a happy 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, 211898 + ... + 212265.

It is an arithmetic number, because the mean of its divisors is an integer number (9543690).

Almost surely, 2^78045992 is an apocalyptic number.

It is an amenable number.

78045992 is a deficient number, since it is larger than the sum of its proper divisors (74653048).

78045992 is a wasteful number, since it uses less digits than its factorization.

78045992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424192 (or 424188 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 78045992 is about 8834.3642668842. The cubic root of 78045992 is about 427.3498294978.

The spelling of 78045992 in words is "seventy-eight million, forty-five thousand, nine hundred ninety-two".