16990432 has 24 divisors (see below), whose sum is σ = 33858216. Its totient is φ = 8391552.

The previous prime is 16990417. The next prime is 16990439. The reversal of 16990432 is 23409961.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543 + ... + 5854.

It is an arithmetic number, because the mean of its divisors is an integer number (1410759).

Almost surely, 2^16990432 is an apocalyptic number.

It is an amenable number.

16990432 is a deficient number, since it is larger than the sum of its proper divisors (16867784).

16990432 is an equidigital number, since it uses as much as digits as its factorization.

16990432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6490 (or 6482 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 16990432 is about 4121.9451718818. The cubic root of 16990432 is about 257.0799107536.

It can be divided in two parts, 169 and 90432, that added together give a square (90601 = 301²).

The spelling of 16990432 in words is "sixteen million, nine hundred ninety thousand, four hundred thirty-two".