16904216628 has 144 divisors (see below), whose sum is σ = 51288793920. Its totient is φ = 4637647872.

The previous prime is 16904216621. The next prime is 16904216633. The reversal of 16904216628 is 82661240961.

16904216628 is a `hidden beast` number, since 1 + 6 + 9 + 0 + 4 + 2 + 16 + 628 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16904216621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95251 + ... + 207077.

It is an arithmetic number, because the mean of its divisors is an integer number (356172180).

Almost surely, 2^16904216628 is an apocalyptic number.

16904216628 is a gapful number since it is divisible by the number (18) 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 16904216628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25644396960).

16904216628 is an abundant number, since it is smaller than the sum of its proper divisors (34384577292).

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

16904216628 is a wasteful number, since it uses less digits than its factorization.

16904216628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111886 (or 111881 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 16904216628 in words is "sixteen billion, nine hundred four million, two hundred sixteen thousand, six hundred twenty-eight".