57308958 has 80 divisors (see below), whose sum is σ = 148557024. Its totient is φ = 16174080.

The previous prime is 57308957. The next prime is 57308971. The reversal of 57308958 is 85980375.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57308957) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 109738 + ... + 110258.

Almost surely, 2^57308958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57308958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74278512).

57308958 is an abundant number, since it is smaller than the sum of its proper divisors (91248066).

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

57308958 is a wasteful number, since it uses less digits than its factorization.

57308958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 57308958 is about 7570.2680269592. The cubic root of 57308958 is about 385.5441969645.

The spelling of 57308958 in words is "fifty-seven million, three hundred eight thousand, nine hundred fifty-eight".