16641256 has 8 divisors (see below), whose sum is σ = 31202370. Its totient is φ = 8320624.

The previous prime is 16641239. The next prime is 16641263. The reversal of 16641256 is 65214661.

It can be written as a sum of positive squares in only one way, i.e., 16532356 + 108900 = 4066^2 + 330^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040071 + ... + 1040086.

Almost surely, 2^16641256 is an apocalyptic number.

It is an amenable number.

16641256 is a deficient number, since it is larger than the sum of its proper divisors (14561114).

16641256 is a wasteful number, since it uses less digits than its factorization.

16641256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080163 (or 2080159 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 16641256 is about 4079.3695591353. The cubic root of 16641256 is about 255.3065952106.

It can be divided in two parts, 16641 and 256, that multiplied together give a square (4260096 = 2064²).

The spelling of 16641256 in words is "sixteen million, six hundred forty-one thousand, two hundred fifty-six".