57431648 has 24 divisors (see below), whose sum is σ = 115205328. Its totient is φ = 28173184.

The previous prime is 57431641. The next prime is 57431651. The reversal of 57431648 is 84613475.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57431641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15236 + ... + 18627.

It is an arithmetic number, because the mean of its divisors is an integer number (4800222).

Almost surely, 2^57431648 is an apocalyptic number.

It is an amenable number.

57431648 is an abundant number, since it is smaller than the sum of its proper divisors (57773680).

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

57431648 is a wasteful number, since it uses less digits than its factorization.

57431648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33926 (or 33918 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 57431648 is about 7578.3671064419. The cubic root of 57431648 is about 385.8191318871.

The spelling of 57431648 in words is "fifty-seven million, four hundred thirty-one thousand, six hundred forty-eight".