57308620 has 12 divisors (see below), whose sum is σ = 120348144. Its totient is φ = 22923440.

The previous prime is 57308609. The next prime is 57308621. The reversal of 57308620 is 2680375.

It is not an unprimeable number, because it can be changed into a prime (57308621) 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, 1432696 + ... + 1432735.

It is an arithmetic number, because the mean of its divisors is an integer number (10029012).

Almost surely, 2^57308620 is an apocalyptic number.

It is an amenable number.

57308620 is an abundant number, since it is smaller than the sum of its proper divisors (63039524).

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

57308620 is a wasteful number, since it uses less digits than its factorization.

57308620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865440 (or 2865438 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 57308620 is about 7570.2457027497. The cubic root of 57308620 is about 385.5434390016.

Adding to 57308620 its reverse (2680375), we get a palindrome (59988995).

The spelling of 57308620 in words is "fifty-seven million, three hundred eight thousand, six hundred twenty".