57432312 has 144 divisors (see below), whose sum is σ = 184242240. Its totient is φ = 16111872.

The previous prime is 57432299. The next prime is 57432313. The reversal of 57432312 is 21323475.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57432313) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 257433 + ... + 257655.

It is an arithmetic number, because the mean of its divisors is an integer number (1279460).

Almost surely, 2^57432312 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 57432312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92121120).

57432312 is an abundant number, since it is smaller than the sum of its proper divisors (126809928).

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

57432312 is a wasteful number, since it uses less digits than its factorization.

57432312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 308 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 57432312 is about 7578.4109152249. The cubic root of 57432312 is about 385.8206187729.

Adding to 57432312 its reverse (21323475), we get a palindrome (78755787).

The spelling of 57432312 in words is "fifty-seven million, four hundred thirty-two thousand, three hundred twelve".