78057908 has 12 divisors (see below), whose sum is σ = 141311940. Its totient is φ = 37683072.

The previous prime is 78057899. The next prime is 78057911. The reversal of 78057908 is 80975087.

It can be written as a sum of positive squares in 2 ways, for example, as 19963024 + 58094884 = 4468^2 + 7622^2 .

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, 336341 + ... + 336572.

It is an arithmetic number, because the mean of its divisors is an integer number (11775995).

Almost surely, 2^78057908 is an apocalyptic number.

It is an amenable number.

78057908 is a deficient number, since it is larger than the sum of its proper divisors (63254032).

78057908 is a wasteful number, since it uses less digits than its factorization.

78057908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672946 (or 672944 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 78057908 is about 8835.0386529998. The cubic root of 78057908 is about 427.3715775351.

The spelling of 78057908 in words is "seventy-eight million, fifty-seven thousand, nine hundred eight".