16989822 has 24 divisors (see below), whose sum is σ = 36953280. Its totient is φ = 5641440.

The previous prime is 16989821. The next prime is 16989823. The reversal of 16989822 is 22898961.

It is an interprime number because it is at equal distance from previous prime (16989821) and next prime (16989823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16989821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3379 + ... + 6737.

It is an arithmetic number, because the mean of its divisors is an integer number (1539720).

Almost surely, 2^16989822 is an apocalyptic number.

16989822 is an abundant number, since it is smaller than the sum of its proper divisors (19963458).

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

16989822 is a wasteful number, since it uses less digits than its factorization.

16989822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648 (or 3645 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 16989822 is about 4121.8711770263. The cubic root of 16989822 is about 257.0768341078.

The spelling of 16989822 in words is "sixteen million, nine hundred eighty-nine thousand, eight hundred twenty-two".