990732236 has 12 divisors (see below), whose sum is σ = 1867149312. Its totient is φ = 457261008.

The previous prime is 990732217. The next prime is 990732251. The reversal of 990732236 is 632237099.

It is a junction number, because it is equal to n+sod(n) for n = 990732193 and 990732202.

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, 9526220 + ... + 9526323.

It is an arithmetic number, because the mean of its divisors is an integer number (155595776).

Almost surely, 2^990732236 is an apocalyptic number.

It is an amenable number.

990732236 is a deficient number, since it is larger than the sum of its proper divisors (876417076).

990732236 is a wasteful number, since it uses less digits than its factorization.

990732236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19052560 (or 19052558 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 990732236 is about 31475.8992881856. The cubic root of 990732236 is about 996.9011523961.

The spelling of 990732236 in words is "nine hundred ninety million, seven hundred thirty-two thousand, two hundred thirty-six".