990280232 has 16 divisors (see below), whose sum is σ = 1857934260. Its totient is φ = 494831104.

The previous prime is 990280231. The next prime is 990280241. The reversal of 990280232 is 232082099.

It can be written as a sum of positive squares in 2 ways, for example, as 818303236 + 171976996 = 28606^2 + 13114^2 .

It is a junction number, because it is equal to n+sod(n) for n = 990280192 and 990280201.

It is not an unprimeable number, because it can be changed into a prime (990280231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24713 + ... + 50904.

Almost surely, 2^990280232 is an apocalyptic number.

It is an amenable number.

990280232 is a deficient number, since it is larger than the sum of its proper divisors (867654028).

990280232 is a wasteful number, since it uses less digits than its factorization.

990280232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77260 (or 77256 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 990280232 is about 31468.7183088222. The cubic root of 990280232 is about 996.7495231815.

The spelling of 990280232 in words is "nine hundred ninety million, two hundred eighty thousand, two hundred thirty-two".