57022140 has 96 divisors (see below), whose sum is σ = 183988224. Its totient is φ = 12925440.

The previous prime is 57022099. The next prime is 57022157. The reversal of 57022140 is 4122075.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57045 + ... + 58035.

It is an arithmetic number, because the mean of its divisors is an integer number (1916544).

Almost surely, 2^57022140 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 57022140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91994112).

57022140 is an abundant number, since it is smaller than the sum of its proper divisors (126966084).

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

57022140 is a wasteful number, since it uses less digits than its factorization.

57022140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 57022140 is about 7551.3005502364. The cubic root of 57022140 is about 384.8999346397.

The spelling of 57022140 in words is "fifty-seven million, twenty-two thousand, one hundred forty".