285873240 has 64 divisors (see below), whose sum is σ = 902764800. Its totient is φ = 72220032.

The previous prime is 285873209. The next prime is 285873253. The reversal of 285873240 is 42378582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60412 + ... + 64971.

It is an arithmetic number, because the mean of its divisors is an integer number (14105700).

Almost surely, 2^285873240 is an apocalyptic number.

285873240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285873240 is an abundant number, since it is smaller than the sum of its proper divisors (616891560).

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

285873240 is a wasteful number, since it uses less digits than its factorization.

285873240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125416 (or 125412 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 285873240 is about 16907.7863719648. The cubic root of 285873240 is about 658.7558747992.

The spelling of 285873240 in words is "two hundred eighty-five million, eight hundred seventy-three thousand, two hundred forty".