285680892 has 24 divisors (see below), whose sum is σ = 761815936. Its totient is φ = 81623088.

The previous prime is 285680887. The next prime is 285680893. The reversal of 285680892 is 298086582.

285680892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×285680892² = 163227144107831328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285680893) by changing a digit.

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, 1700398 + ... + 1700565.

Almost surely, 2^285680892 is an apocalyptic number.

It is an amenable number.

285680892 is an abundant number, since it is smaller than the sum of its proper divisors (476135044).

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

285680892 is a wasteful number, since it uses less digits than its factorization.

285680892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400977 (or 3400975 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 285680892 is about 16902.0972663158. The cubic root of 285680892 is about 658.6080950765.

The spelling of 285680892 in words is "two hundred eighty-five million, six hundred eighty thousand, eight hundred ninety-two".