16990332 has 48 divisors (see below), whose sum is σ = 42725760. Its totient is φ = 5237568.

The previous prime is 16990319. The next prime is 16990333. The reversal of 16990332 is 23309961.

It is a junction number, because it is equal to n+sod(n) for n = 16990293 and 16990302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16990333) 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, 8938 + ... + 10670.

It is an arithmetic number, because the mean of its divisors is an integer number (890120).

Almost surely, 2^16990332 is an apocalyptic number.

16990332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16990332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21362880).

16990332 is an abundant number, since it is smaller than the sum of its proper divisors (25735428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16990332 is a wasteful number, since it uses less digits than its factorization.

16990332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802 (or 1800 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 16990332 is about 4121.9330416687. The cubic root of 16990332 is about 257.0794063905.

The spelling of 16990332 in words is "sixteen million, nine hundred ninety thousand, three hundred thirty-two".