57472240 has 80 divisors (see below), whose sum is σ = 161721792. Its totient is φ = 18542592.

The previous prime is 57472231. The next prime is 57472241. The reversal of 57472240 is 4227475.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57472241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6502 + ... + 12538.

Almost surely, 2^57472240 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 57472240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80860896).

57472240 is an abundant number, since it is smaller than the sum of its proper divisors (104249552).

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

57472240 is a wasteful number, since it uses less digits than its factorization.

57472240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074 (or 6068 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 57472240 is about 7581.0447828779. The cubic root of 57472240 is about 385.9100079254.

The spelling of 57472240 in words is "fifty-seven million, four hundred seventy-two thousand, two hundred forty".