57730420 has 24 divisors (see below), whose sum is σ = 132255648. Its totient is φ = 20992800.

The previous prime is 57730411. The next prime is 57730451. The reversal of 57730420 is 2403775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130986 + ... + 131425.

It is an arithmetic number, because the mean of its divisors is an integer number (5510652).

Almost surely, 2^57730420 is an apocalyptic number.

It is an amenable number.

57730420 is an abundant number, since it is smaller than the sum of its proper divisors (74525228).

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

57730420 is a wasteful number, since it uses less digits than its factorization.

57730420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262431 (or 262429 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 57730420 is about 7598.0536981519. The cubic root of 57730420 is about 386.4870135831.

The spelling of 57730420 in words is "fifty-seven million, seven hundred thirty thousand, four hundred twenty".