285231960 has 192 divisors, whose sum is σ = 1016215200. Its totient is φ = 68954112.

The previous prime is 285231959. The next prime is 285231977. The reversal of 285231960 is 69132582.

285231960 is a `hidden beast` number, since 285 + 2 + 319 + 60 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275604 + ... + 276636.

Almost surely, 2^285231960 is an apocalyptic number.

285231960 is a gapful number since it is divisible by the number (20) 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 285231960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508107600).

285231960 is an abundant number, since it is smaller than the sum of its proper divisors (730983240).

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

285231960 is a wasteful number, since it uses less digits than its factorization.

285231960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1115 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 285231960 is about 16888.8116811101. The cubic root of 285231960 is about 658.2629252623.

The spelling of 285231960 in words is "two hundred eighty-five million, two hundred thirty-one thousand, nine hundred sixty".