285434172 has 48 divisors (see below), whose sum is σ = 757236480. Its totient is φ = 92930544.

The previous prime is 285434167. The next prime is 285434173. The reversal of 285434172 is 271434582.

It is a happy number.

285434172 is a `hidden beast` number, since 2 + 8 + 543 + 41 + 72 = 666.

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 (285434173) 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 15 ways as a sum of consecutive naturals, for example, 26088 + ... + 35375.

It is an arithmetic number, because the mean of its divisors is an integer number (15775760).

Almost surely, 2^285434172 is an apocalyptic number.

It is an amenable number.

285434172 is an abundant number, since it is smaller than the sum of its proper divisors (471802308).

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

285434172 is a wasteful number, since it uses less digits than its factorization.

285434172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61519 (or 61511 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 285434172 is about 16894.7971873000. The cubic root of 285434172 is about 658.4184445570.

The spelling of 285434172 in words is "two hundred eighty-five million, four hundred thirty-four thousand, one hundred seventy-two".