16890648 has 64 divisors (see below), whose sum is σ = 45308160. Its totient is φ = 5233536.

The previous prime is 16890637. The next prime is 16890659. The reversal of 16890648 is 84609861.

It is an interprime number because it is at equal distance from previous prime (16890637) and next prime (16890659).

It is a super-3 number, since 3×16890648³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20011 + ... + 20837.

It is an arithmetic number, because the mean of its divisors is an integer number (707940).

Almost surely, 2^16890648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16890648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22654080).

16890648 is an abundant number, since it is smaller than the sum of its proper divisors (28417512).

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

16890648 is a wasteful number, since it uses less digits than its factorization.

16890648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 16890648 is about 4109.8233538681. The cubic root of 16890648 is about 256.5756495931.

The spelling of 16890648 in words is "sixteen million, eight hundred ninety thousand, six hundred forty-eight".