13645272 has 32 divisors (see below), whose sum is σ = 34210800. Its totient is φ = 4535424.

The previous prime is 13645259. The next prime is 13645321. The reversal of 13645272 is 27254631.

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 7 ways as a sum of consecutive naturals, for example, 11658 + ... + 12774.

Almost surely, 2^13645272 is an apocalyptic number.

13645272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13645272 is an abundant number, since it is smaller than the sum of its proper divisors (20565528).

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

13645272 is a wasteful number, since it uses less digits than its factorization.

13645272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635 (or 1631 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 13645272 is about 3693.9507305864. The cubic root of 13645272 is about 238.9612046995.

The spelling of 13645272 in words is "thirteen million, six hundred forty-five thousand, two hundred seventy-two".