57002040 has 96 divisors (see below), whose sum is σ = 186451200. Its totient is φ = 15102720.

The previous prime is 57002039. The next prime is 57002041. The reversal of 57002040 is 4020075.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (57002039) and next prime (57002041).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57002041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68346 + ... + 69174.

It is an arithmetic number, because the mean of its divisors is an integer number (1942200).

Almost surely, 2^57002040 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 57002040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93225600).

57002040 is an abundant number, since it is smaller than the sum of its proper divisors (129449160).

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

57002040 is a wasteful number, since it uses less digits than its factorization.

57002040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 57002040 is about 7549.9695363624. The cubic root of 57002040 is about 384.8547042672.

The spelling of 57002040 in words is "fifty-seven million, two thousand, forty".