16228688 has 20 divisors (see below), whose sum is σ = 35935200. Its totient is φ = 6955104.

The previous prime is 16228687. The next prime is 16228747. The reversal of 16228688 is 88682261.

16228688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16228687) 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, 72338 + ... + 72561.

It is an arithmetic number, because the mean of its divisors is an integer number (1796760).

Almost surely, 2^16228688 is an apocalyptic number.

It is an amenable number.

16228688 is an abundant number, since it is smaller than the sum of its proper divisors (19706512).

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

16228688 is a wasteful number, since it uses less digits than its factorization.

16228688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144914 (or 144908 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 16228688 is about 4028.4845785978. The cubic root of 16228688 is about 253.1790719825.

The spelling of 16228688 in words is "sixteen million, two hundred twenty-eight thousand, six hundred eighty-eight".