16990533 has 16 divisors (see below), whose sum is σ = 28767360. Its totient is φ = 9708768.

The previous prime is 16990517. The next prime is 16990559. The reversal of 16990533 is 33509961.

It is not a de Polignac number, because 16990533 - 2⁴ = 16990517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44760 + ... + 45137.

It is an arithmetic number, because the mean of its divisors is an integer number (1797960).

Almost surely, 2^16990533 is an apocalyptic number.

It is an amenable number.

16990533 is a deficient number, since it is larger than the sum of its proper divisors (11776827).

16990533 is an equidigital number, since it uses as much as digits as its factorization.

16990533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89913 (or 89907 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 16990533 is about 4121.9574233609. The cubic root of 16990533 is about 257.0804201583.

The spelling of 16990533 in words is "sixteen million, nine hundred ninety thousand, five hundred thirty-three".