57303940 has 24 divisors (see below), whose sum is σ = 127417752. Its totient is φ = 21573120.

The previous prime is 57303929. The next prime is 57303941. The reversal of 57303940 is 4930375.

It can be written as a sum of positive squares in 4 ways, for example, as 30118144 + 27185796 = 5488^2 + 5214^2 .

It is not an unprimeable number, because it can be changed into a prime (57303941) 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, 83931 + ... + 84610.

It is an arithmetic number, because the mean of its divisors is an integer number (5309073).

Almost surely, 2^57303940 is an apocalyptic number.

It is an amenable number.

57303940 is an abundant number, since it is smaller than the sum of its proper divisors (70113812).

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

57303940 is a wasteful number, since it uses less digits than its factorization.

57303940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168567 (or 168565 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 57303940 is about 7569.9365915442. The cubic root of 57303940 is about 385.5329438241.

The spelling of 57303940 in words is "fifty-seven million, three hundred three thousand, nine hundred forty".