57420690 has 16 divisors (see below), whose sum is σ = 137809728. Its totient is φ = 15312176.

The previous prime is 57420689. The next prime is 57420731. The reversal of 57420690 is 9602475.

57420690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57420690² = 6594271280152200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956982 + ... + 957041.

It is an arithmetic number, because the mean of its divisors is an integer number (8613108).

Almost surely, 2^57420690 is an apocalyptic number.

57420690 is an abundant number, since it is smaller than the sum of its proper divisors (80389038).

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

57420690 is a wasteful number, since it uses less digits than its factorization.

57420690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914033.

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

The square root of 57420690 is about 7577.6440929883. The cubic root of 57420690 is about 385.7945921364.

The spelling of 57420690 in words is "fifty-seven million, four hundred twenty thousand, six hundred ninety".