19990232 has 16 divisors (see below), whose sum is σ = 39686760. Its totient is φ = 9407104.

The previous prime is 19990213. The next prime is 19990241. The reversal of 19990232 is 23209991.

It is a junction number, because it is equal to n+sod(n) for n = 19990192 and 19990201.

It is a congruent number.

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, 73358 + ... + 73629.

Almost surely, 2^19990232 is an apocalyptic number.

It is an amenable number.

19990232 is a deficient number, since it is larger than the sum of its proper divisors (19696528).

19990232 is a wasteful number, since it uses less digits than its factorization.

19990232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147010 (or 147006 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 19990232 is about 4471.0437260219. The cubic root of 19990232 is about 271.3975637445.

The spelling of 19990232 in words is "nineteen million, nine hundred ninety thousand, two hundred thirty-two".