57289232 has 160 divisors (see below), whose sum is σ = 154156800. Its totient is φ = 20321280.

The previous prime is 57289231. The next prime is 57289247. The reversal of 57289232 is 23298275.

It is a super-2 number, since 2×57289232² = 6564112206299648, which contains 22 as substring.

Its product of digits (60480) is a multiple of the sum of its prime factors (126).

It is not an unprimeable number, because it can be changed into a prime (57289231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784748 + ... + 784820.

It is an arithmetic number, because the mean of its divisors is an integer number (963480).

Almost surely, 2^57289232 is an apocalyptic number.

57289232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57289232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77078400).

57289232 is an abundant number, since it is smaller than the sum of its proper divisors (96867568).

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

57289232 is a wasteful number, since it uses less digits than its factorization.

57289232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 106 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 57289232 is about 7568.9650547482. The cubic root of 57289232 is about 385.4999565418.

The spelling of 57289232 in words is "fifty-seven million, two hundred eighty-nine thousand, two hundred thirty-two".