16641264 has 80 divisors (see below), whose sum is σ = 46068480. Its totient is φ = 5160960.

The previous prime is 16641263. The next prime is 16641269. The reversal of 16641264 is 46214661.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16641263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64624 + ... + 64880.

It is an arithmetic number, because the mean of its divisors is an integer number (575856).

Almost surely, 2^16641264 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 16641264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23034240).

16641264 is an abundant number, since it is smaller than the sum of its proper divisors (29427216).

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

16641264 is a wasteful number, since it uses less digits than its factorization.

16641264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 352 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 16641264 is about 4079.3705396789. The cubic root of 16641264 is about 255.3066361220.

The spelling of 16641264 in words is "sixteen million, six hundred forty-one thousand, two hundred sixty-four".