16428664 has 32 divisors (see below), whose sum is σ = 37277280. Its totient is φ = 6626304.

The previous prime is 16428661. The next prime is 16428677. The reversal of 16428664 is 46682461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16428661) 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, 7677 + ... + 9580.

It is an arithmetic number, because the mean of its divisors is an integer number (1164915).

Almost surely, 2^16428664 is an apocalyptic number.

16428664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16428664 is an abundant number, since it is smaller than the sum of its proper divisors (20848616).

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

16428664 is a wasteful number, since it uses less digits than its factorization.

16428664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17287 (or 17283 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 16428664 is about 4053.2288363723. The cubic root of 16428664 is about 254.2147521432.

The spelling of 16428664 in words is "sixteen million, four hundred twenty-eight thousand, six hundred sixty-four".