16890396 has 12 divisors (see below), whose sum is σ = 39410952. Its totient is φ = 5630128.

The previous prime is 16890371. The next prime is 16890397. The reversal of 16890396 is 69309861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16890397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703755 + ... + 703778.

It is an arithmetic number, because the mean of its divisors is an integer number (3284246).

Almost surely, 2^16890396 is an apocalyptic number.

It is an amenable number.

16890396 is an abundant number, since it is smaller than the sum of its proper divisors (22520556).

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

16890396 is a wasteful number, since it uses less digits than its factorization.

16890396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407540 (or 1407538 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 16890396 is about 4109.7926955018. The cubic root of 16890396 is about 256.5743735934.

The spelling of 16890396 in words is "sixteen million, eight hundred ninety thousand, three hundred ninety-six".