285158232 has 240 divisors, whose sum is σ = 896203440. Its totient is φ = 84509568.

The previous prime is 285158201. The next prime is 285158233. The reversal of 285158232 is 232851582.

285158232 is a `hidden beast` number, since 28 + 51 + 582 + 3 + 2 = 666.

285158232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (38400) is a multiple of the sum of its prime divisors (100).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285158233) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 5380318 + ... + 5380370.

It is an arithmetic number, because the mean of its divisors is an integer number (3734181).

Almost surely, 2^285158232 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 285158232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448101720).

285158232 is an abundant number, since it is smaller than the sum of its proper divisors (611045208).

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

285158232 is a wasteful number, since it uses less digits than its factorization.

285158232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 100 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 285158232 is about 16886.6287932198. The cubic root of 285158232 is about 658.2062034850.

It can be divided in two parts, 285158 and 232, that added together give a triangular number (285390 = T₇₅₅).

The spelling of 285158232 in words is "two hundred eighty-five million, one hundred fifty-eight thousand, two hundred thirty-two".