285112620 has 72 divisors (see below), whose sum is σ = 931375536. Its totient is φ = 70180992.

The previous prime is 285112609. The next prime is 285112631. The reversal of 285112620 is 26211582.

It is a happy number.

285112620 is a `hidden beast` number, since 28 + 5 + 1 + 12 + 620 = 666.

It is an interprime number because it is at equal distance from previous prime (285112609) and next prime (285112631).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58582 + ... + 63261.

Almost surely, 2^285112620 is an apocalyptic number.

285112620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285112620 is an abundant number, since it is smaller than the sum of its proper divisors (646262916).

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

285112620 is a wasteful number, since it uses less digits than its factorization.

285112620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121871 (or 121866 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 285112620 is about 16885.2782032160. The cubic root of 285112620 is about 658.1711075291.

The spelling of 285112620 in words is "two hundred eighty-five million, one hundred twelve thousand, six hundred twenty".