57906840 has 64 divisors (see below), whose sum is σ = 174620160. Its totient is φ = 15361920.

The previous prime is 57906833. The next prime is 57906917. The reversal of 57906840 is 4860975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24177 + ... + 26463.

It is an arithmetic number, because the mean of its divisors is an integer number (2728440).

Almost surely, 2^57906840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57906840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87310080).

57906840 is an abundant number, since it is smaller than the sum of its proper divisors (116713320).

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

57906840 is a wasteful number, since it uses less digits than its factorization.

57906840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 57906840 is about 7609.6543942547. The cubic root of 57906840 is about 386.8803053776.

The spelling of 57906840 in words is "fifty-seven million, nine hundred six thousand, eight hundred forty".