57214440 has 96 divisors (see below), whose sum is σ = 187873920. Its totient is φ = 15099264.

The previous prime is 57214429. The next prime is 57214447. The reversal of 57214440 is 4441275.

57214440 is a `hidden beast` number, since 5 + 7 + 214 + 440 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (57214447) 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, 36309 + ... + 37851.

It is an arithmetic number, because the mean of its divisors is an integer number (1957020).

Almost surely, 2^57214440 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 57214440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93936960).

57214440 is an abundant number, since it is smaller than the sum of its proper divisors (130659480).

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

57214440 is a wasteful number, since it uses less digits than its factorization.

57214440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 57214440 is about 7564.0227392572. The cubic root of 57214440 is about 385.3321247180.

The spelling of 57214440 in words is "fifty-seven million, two hundred fourteen thousand, four hundred forty".