57020740 has 24 divisors (see below), whose sum is σ = 136850112. Its totient is φ = 19549920.

The previous prime is 57020731. The next prime is 57020741. The reversal of 57020740 is 4702075.

It is not an unprimeable number, because it can be changed into a prime (57020741) 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, 203506 + ... + 203785.

It is an arithmetic number, because the mean of its divisors is an integer number (5702088).

Almost surely, 2^57020740 is an apocalyptic number.

It is an amenable number.

57020740 is an abundant number, since it is smaller than the sum of its proper divisors (79829372).

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

57020740 is a wasteful number, since it uses less digits than its factorization.

57020740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407307 (or 407305 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 57020740 is about 7551.2078504038. The cubic root of 57020740 is about 384.8967846099.

The spelling of 57020740 in words is "fifty-seven million, twenty thousand, seven hundred forty".