78057860 has 24 divisors (see below), whose sum is σ = 171049536. Its totient is φ = 29865440.

The previous prime is 78057853. The next prime is 78057877. The reversal of 78057860 is 6875087.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84386 + ... + 85305.

It is an arithmetic number, because the mean of its divisors is an integer number (7127064).

Almost surely, 2^78057860 is an apocalyptic number.

It is an amenable number.

78057860 is an abundant number, since it is smaller than the sum of its proper divisors (92991676).

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

78057860 is a wasteful number, since it uses less digits than its factorization.

78057860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169723 (or 169721 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 78057860 is about 8835.0359365426. The cubic root of 78057860 is about 427.3714899342.

The spelling of 78057860 in words is "seventy-eight million, fifty-seven thousand, eight hundred sixty".