16628790 has 16 divisors (see below), whose sum is σ = 39909168. Its totient is φ = 4434336.

The previous prime is 16628761. The next prime is 16628791. The reversal of 16628790 is 9782661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16628791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277117 + ... + 277176.

It is an arithmetic number, because the mean of its divisors is an integer number (2494323).

Almost surely, 2^16628790 is an apocalyptic number.

16628790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16628790 is an abundant number, since it is smaller than the sum of its proper divisors (23280378).

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

16628790 is a wasteful number, since it uses less digits than its factorization.

16628790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554303.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 16628790 is about 4077.8413407096. The cubic root of 16628790 is about 255.2428290490.

The spelling of 16628790 in words is "sixteen million, six hundred twenty-eight thousand, seven hundred ninety".