57440448 has 112 divisors (see below), whose sum is σ = 181924960. Its totient is φ = 17667072.

The previous prime is 57440447. The next prime is 57440459. The reversal of 57440448 is 84404475.

57440448 is a `hidden beast` number, since 574 + 40 + 4 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (57440441) 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, 21186 + ... + 23742.

It is an arithmetic number, because the mean of its divisors is an integer number (1624330).

Almost surely, 2^57440448 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 57440448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90962480).

57440448 is an abundant number, since it is smaller than the sum of its proper divisors (124484512).

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

57440448 is a wasteful number, since it uses less digits than its factorization.

57440448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591 (or 2575 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 57440448 is about 7578.9476842105. The cubic root of 57440448 is about 385.8388366729.

The spelling of 57440448 in words is "fifty-seven million, four hundred forty thousand, four hundred forty-eight".