57143328 has 96 divisors (see below), whose sum is σ = 166888512. Its totient is φ = 16972800.

The previous prime is 57143327. The next prime is 57143351. The reversal of 57143328 is 82334175.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (57143321) 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, 55458 + ... + 56478.

It is an arithmetic number, because the mean of its divisors is an integer number (1738422).

Almost surely, 2^57143328 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 57143328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83444256).

57143328 is an abundant number, since it is smaller than the sum of its proper divisors (109745184).

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

57143328 is a wasteful number, since it uses less digits than its factorization.

57143328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 1090 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 57143328 is about 7559.3206043930. The cubic root of 57143328 is about 385.1724150453.

The spelling of 57143328 in words is "fifty-seven million, one hundred forty-three thousand, three hundred twenty-eight".