16256664 has 48 divisors (see below), whose sum is σ = 45110520. Its totient is φ = 5285760.

The previous prime is 16256633. The next prime is 16256671. The reversal of 16256664 is 46665261.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199 + ... + 5705.

Almost surely, 2^16256664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16256664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22555260).

16256664 is an abundant number, since it is smaller than the sum of its proper divisors (28853856).

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

16256664 is a wasteful number, since it uses less digits than its factorization.

16256664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560 (or 5553 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 16256664 is about 4031.9553568957. The cubic root of 16256664 is about 253.3244702963.

The spelling of 16256664 in words is "sixteen million, two hundred fifty-six thousand, six hundred sixty-four".