16522668 has 18 divisors (see below), whose sum is σ = 41765724. Its totient is φ = 5507544.

The previous prime is 16522661. The next prime is 16522673. The reversal of 16522668 is 86622561.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 458963 = 16522668 / (1 + 6 + 5 + 2 + 2 + 6 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (16522661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229446 + ... + 229517.

It is an arithmetic number, because the mean of its divisors is an integer number (2320318).

Almost surely, 2^16522668 is an apocalyptic number.

16522668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16522668 is an abundant number, since it is smaller than the sum of its proper divisors (25243056).

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

16522668 is a wasteful number, since it uses less digits than its factorization.

16522668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458973 (or 458968 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 16522668 is about 4064.8084825733. The cubic root of 16522668 is about 254.6986983396.

The spelling of 16522668 in words is "sixteen million, five hundred twenty-two thousand, six hundred sixty-eight".