285983982 has 48 divisors (see below), whose sum is σ = 633709440. Its totient is φ = 93182400.

The previous prime is 285983981. The next prime is 285983983. The reversal of 285983982 is 289389582.

It is an interprime number because it is at equal distance from previous prime (285983981) and next prime (285983983).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285983981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198019 + ... + 199457.

It is an arithmetic number, because the mean of its divisors is an integer number (13202280).

Almost surely, 2^285983982 is an apocalyptic number.

285983982 is an abundant number, since it is smaller than the sum of its proper divisors (347725458).

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

285983982 is a wasteful number, since it uses less digits than its factorization.

285983982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689 (or 1686 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 285983982 is about 16911.0609365587. The cubic root of 285983982 is about 658.8409270938.

The spelling of 285983982 in words is "two hundred eighty-five million, nine hundred eighty-three thousand, nine hundred eighty-two".