57308316 has 48 divisors (see below), whose sum is σ = 146181504. Its totient is φ = 17366976.

The previous prime is 57308311. The next prime is 57308323. The reversal of 57308316 is 61380375.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57308311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7711 + ... + 13193.

It is an arithmetic number, because the mean of its divisors is an integer number (3045448).

Almost surely, 2^57308316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57308316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73090752).

57308316 is an abundant number, since it is smaller than the sum of its proper divisors (88873188).

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

57308316 is a wasteful number, since it uses less digits than its factorization.

57308316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570 (or 5568 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 57308316 is about 7570.2256241145. The cubic root of 57308316 is about 385.5427572809.

The spelling of 57308316 in words is "fifty-seven million, three hundred eight thousand, three hundred sixteen".