285308936 has 16 divisors (see below), whose sum is σ = 583586640. Its totient is φ = 129685840.

The previous prime is 285308927. The next prime is 285308953. The reversal of 285308936 is 639803582.

It is a super-2 number, since 2×285308936² = 162802377922904192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620986 + ... + 1621161.

It is an arithmetic number, because the mean of its divisors is an integer number (36474165).

Almost surely, 2^285308936 is an apocalyptic number.

It is an amenable number.

285308936 is an abundant number, since it is smaller than the sum of its proper divisors (298277704).

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

285308936 is a wasteful number, since it uses less digits than its factorization.

285308936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242164 (or 3242160 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 285308936 is about 16891.0904325328. The cubic root of 285308936 is about 658.3221354217.

The spelling of 285308936 in words is "two hundred eighty-five million, three hundred eight thousand, nine hundred thirty-six".