57309048 has 48 divisors (see below), whose sum is σ = 155769120. Its totient is φ = 19034496.

The previous prime is 57309047. The next prime is 57309061. The reversal of 57309048 is 84090375.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57309047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21265 + ... + 23807.

It is an arithmetic number, because the mean of its divisors is an integer number (3245190).

Almost surely, 2^57309048 is an apocalyptic number.

It is an amenable number.

57309048 is an abundant number, since it is smaller than the sum of its proper divisors (98460072).

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

57309048 is a wasteful number, since it uses less digits than its factorization.

57309048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868 (or 2861 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 57309048 is about 7570.2739712642. The cubic root of 57309048 is about 385.5443987885.

The spelling of 57309048 in words is "fifty-seven million, three hundred nine thousand, forty-eight".