13649628 has 24 divisors (see below), whose sum is σ = 31910032. Its totient is φ = 4541184.

The previous prime is 13649627. The next prime is 13649651. The reversal of 13649628 is 82694631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13649627) 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 7 ways as a sum of consecutive naturals, for example, 9876 + ... + 11172.

Almost surely, 2^13649628 is an apocalyptic number.

It is an amenable number.

13649628 is an abundant number, since it is smaller than the sum of its proper divisors (18260404).

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

13649628 is a wasteful number, since it uses less digits than its factorization.

13649628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2179 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 13649628 is about 3694.5402961668. The cubic root of 13649628 is about 238.9866299717.

The spelling of 13649628 in words is "thirteen million, six hundred forty-nine thousand, six hundred twenty-eight".