990284432 has 20 divisors (see below), whose sum is σ = 1921506480. Its totient is φ = 494411808.

The previous prime is 990284419. The next prime is 990284443. The reversal of 990284432 is 234482099.

It is a self number, because there is not a number n which added to its sum of digits gives 990284432.

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, 34382 + ... + 56237.

It is an arithmetic number, because the mean of its divisors is an integer number (96075324).

Almost surely, 2^990284432 is an apocalyptic number.

It is an amenable number.

990284432 is a deficient number, since it is larger than the sum of its proper divisors (931222048).

990284432 is a wasteful number, since it uses less digits than its factorization.

990284432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91310 (or 91304 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 990284432 is about 31468.7850416885. The cubic root of 990284432 is about 996.7509323254.

The spelling of 990284432 in words is "nine hundred ninety million, two hundred eighty-four thousand, four hundred thirty-two".