286242240 has 56 divisors (see below), whose sum is σ = 908822160. Its totient is φ = 76331008.

The previous prime is 286242211. The next prime is 286242259. The reversal of 286242240 is 42242682.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 286242198 and 286242207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148125 + ... + 150044.

Almost surely, 2^286242240 is an apocalyptic number.

286242240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286242240 is an abundant number, since it is smaller than the sum of its proper divisors (622579920).

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

286242240 is a wasteful number, since it uses less digits than its factorization.

286242240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298189 (or 298179 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 286242240 is about 16918.6949851340. The cubic root of 286242240 is about 659.0391896519.

The spelling of 286242240 in words is "two hundred eighty-six million, two hundred forty-two thousand, two hundred forty".