13809652 has 6 divisors (see below), whose sum is σ = 24166898. Its totient is φ = 6904824.

The previous prime is 13809647. The next prime is 13809667. The reversal of 13809652 is 25690831.

It can be written as a sum of positive squares in only one way, i.e., 12988816 + 820836 = 3604^2 + 906^2 .

It is a super-2 number, since 2×13809652² = 381412976722208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1726203 + ... + 1726210.

Almost surely, 2^13809652 is an apocalyptic number.

It is an amenable number.

13809652 is a deficient number, since it is larger than the sum of its proper divisors (10357246).

13809652 is a wasteful number, since it uses less digits than its factorization.

13809652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452417 (or 3452415 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 13809652 is about 3716.1340126535. The cubic root of 13809652 is about 239.9169388494.

The spelling of 13809652 in words is "thirteen million, eight hundred nine thousand, six hundred fifty-two".