57309788 has 12 divisors (see below), whose sum is σ = 106191792. Its totient is φ = 26969280.

The previous prime is 57309787. The next prime is 57309797. The reversal of 57309788 is 88790375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57309787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421328 + ... + 421463.

It is an arithmetic number, because the mean of its divisors is an integer number (8849316).

Almost surely, 2^57309788 is an apocalyptic number.

It is an amenable number.

57309788 is a deficient number, since it is larger than the sum of its proper divisors (48882004).

57309788 is a wasteful number, since it uses less digits than its factorization.

57309788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842812 (or 842810 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 57309788 is about 7570.3228464842. The cubic root of 57309788 is about 385.5460582218.

The spelling of 57309788 in words is "fifty-seven million, three hundred nine thousand, seven hundred eighty-eight".