13641632 has 12 divisors (see below), whose sum is σ = 26857026. Its totient is φ = 6820800.

The previous prime is 13641623. The next prime is 13641637. The reversal of 13641632 is 23614631.

It can be written as a sum of positive squares in only one way, i.e., 7862416 + 5779216 = 2804^2 + 2404^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13641637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213119 + ... + 213182.

Almost surely, 2^13641632 is an apocalyptic number.

It is an amenable number.

13641632 is a deficient number, since it is larger than the sum of its proper divisors (13215394).

13641632 is an equidigital number, since it uses as much as digits as its factorization.

13641632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426311 (or 426303 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 13641632 is about 3693.4580003027. The cubic root of 13641632 is about 238.9399544540.

The spelling of 13641632 in words is "thirteen million, six hundred forty-one thousand, six hundred thirty-two".