13509652 has 12 divisors (see below), whose sum is σ = 25460596. Its totient is φ = 6235200.

The previous prime is 13509649. The next prime is 13509653. The reversal of 13509652 is 25690531.

It can be written as a sum of positive squares in 2 ways, for example, as 6780816 + 6728836 = 2604^2 + 2594^2 .

It is a super-2 number, since 2×13509652² = 365021394322208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13509653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129849 + ... + 129952.

Almost surely, 2^13509652 is an apocalyptic number.

It is an amenable number.

13509652 is a deficient number, since it is larger than the sum of its proper divisors (11950944).

13509652 is a wasteful number, since it uses less digits than its factorization.

13509652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259818 (or 259816 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 13509652 is about 3675.5478503211. The cubic root of 13509652 is about 238.1668909247.

It can be divided in two parts, 13509 and 652, that added together give a square (14161 = 119²).

The spelling of 13509652 in words is "thirteen million, five hundred nine thousand, six hundred fifty-two".