52857432 has 24 divisors (see below), whose sum is σ = 143155740. Its totient is φ = 17619120.

The previous prime is 52857421. The next prime is 52857433. The reversal of 52857432 is 23475825.

52857432 is a `hidden beast` number, since 52 + 8 + 574 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

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 (52857433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 366994 + ... + 367137.

Almost surely, 2^52857432 is an apocalyptic number.

It is an amenable number.

52857432 is an abundant number, since it is smaller than the sum of its proper divisors (90298308).

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

52857432 is a wasteful number, since it uses less digits than its factorization.

52857432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734143 (or 734136 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 52857432 is about 7270.3116852030. The cubic root of 52857432 is about 375.2914640712.

The spelling of 52857432 in words is "fifty-two million, eight hundred fifty-seven thousand, four hundred thirty-two".