57230040 has 96 divisors (see below), whose sum is σ = 199741680. Its totient is φ = 13079808.

The previous prime is 57230039. The next prime is 57230087. The reversal of 57230040 is 4003275.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 57229989 and 57230016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1014 + ... + 10746.

Almost surely, 2^57230040 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 57230040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99870840).

57230040 is an abundant number, since it is smaller than the sum of its proper divisors (142511640).

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

57230040 is a wasteful number, since it uses less digits than its factorization.

57230040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9761 (or 9750 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 57230040 is about 7565.0538662986. The cubic root of 57230040 is about 385.3671428876.

The spelling of 57230040 in words is "fifty-seven million, two hundred thirty thousand, forty".