16290816 has 44 divisors (see below), whose sum is σ = 43429152. Its totient is φ = 5429248.

The previous prime is 16290793. The next prime is 16290821. The reversal of 16290816 is 61809261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421 + ... + 5723.

Almost surely, 2^16290816 is an apocalyptic number.

16290816 is a gapful number since it is divisible by the number (16) 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 16290816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21714576).

16290816 is an abundant number, since it is smaller than the sum of its proper divisors (27138336).

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

16290816 is an equidigital number, since it uses as much as digits as its factorization.

16290816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326 (or 5308 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 16290816 is about 4036.1883008601. The cubic root of 16290816 is about 253.5017409013.

The spelling of 16290816 in words is "sixteen million, two hundred ninety thousand, eight hundred sixteen".