57071340 has 36 divisors (see below), whose sum is σ = 173116944. Its totient is φ = 15218976.

The previous prime is 57071293. The next prime is 57071359. The reversal of 57071340 is 4317075.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158352 + ... + 158711.

It is an arithmetic number, because the mean of its divisors is an integer number (4808804).

Almost surely, 2^57071340 is an apocalyptic number.

It is an amenable number.

57071340 is an abundant number, since it is smaller than the sum of its proper divisors (116045604).

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

57071340 is a wasteful number, since it uses less digits than its factorization.

57071340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317078 (or 317073 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 57071340 is about 7554.5575648081. The cubic root of 57071340 is about 385.0106029576.

The spelling of 57071340 in words is "fifty-seven million, seventy-one thousand, three hundred forty".