16001264 has 20 divisors (see below), whose sum is σ = 31121520. Its totient is φ = 7969920.

The previous prime is 16001231. The next prime is 16001269. The reversal of 16001264 is 46210061.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16001269) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2717 + ... + 6275.

It is an arithmetic number, because the mean of its divisors is an integer number (1556076).

Almost surely, 2^16001264 is an apocalyptic number.

It is an amenable number.

16001264 is a deficient number, since it is larger than the sum of its proper divisors (15120256).

16001264 is a wasteful number, since it uses less digits than its factorization.

16001264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848 (or 3842 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 16001264 is about 4000.1579968796. The cubic root of 16001264 is about 251.9908453884.

The spelling of 16001264 in words is "sixteen million, one thousand, two hundred sixty-four".