57285780 has 24 divisors (see below), whose sum is σ = 160400352. Its totient is φ = 15276192.

The previous prime is 57285773. The next prime is 57285791. The reversal of 57285780 is 8758275.

It is a happy number.

It is a congruent number.

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, 477322 + ... + 477441.

It is an arithmetic number, because the mean of its divisors is an integer number (6683348).

Almost surely, 2^57285780 is an apocalyptic number.

It is an amenable number.

57285780 is an abundant number, since it is smaller than the sum of its proper divisors (103114572).

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

57285780 is a wasteful number, since it uses less digits than its factorization.

57285780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954775 (or 954773 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 57285780 is about 7568.7370148526. The cubic root of 57285780 is about 385.4922135359.

The spelling of 57285780 in words is "fifty-seven million, two hundred eighty-five thousand, seven hundred eighty".