57730290 has 16 divisors (see below), whose sum is σ = 138552768. Its totient is φ = 15394736.

The previous prime is 57730289. The next prime is 57730297. The reversal of 57730290 is 9203775.

It is not an unprimeable number, because it can be changed into a prime (57730297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962142 + ... + 962201.

It is an arithmetic number, because the mean of its divisors is an integer number (8659548).

Almost surely, 2^57730290 is an apocalyptic number.

57730290 is an abundant number, since it is smaller than the sum of its proper divisors (80822478).

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

57730290 is a wasteful number, since it uses less digits than its factorization.

57730290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924353.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 57730290 is about 7598.0451433247. The cubic root of 57730290 is about 386.4867234798.

The spelling of 57730290 in words is "fifty-seven million, seven hundred thirty thousand, two hundred ninety".