13252815 has 40 divisors (see below), whose sum is σ = 24341328. Its totient is φ = 6894720.

The previous prime is 13252793. The next prime is 13252829. The reversal of 13252815 is 51825231.

It is a happy number.

13252815 is a `hidden beast` number, since 132 + 528 + 1 + 5 = 666.

It is not a de Polignac number, because 13252815 - 2⁵ = 13252783 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17035 + ... + 17795.

Almost surely, 2^13252815 is an apocalyptic number.

13252815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13252815 is a deficient number, since it is larger than the sum of its proper divisors (11088513).

13252815 is an equidigital number, since it uses as much as digits as its factorization.

13252815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 812 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 13252815 is about 3640.4415940927. The cubic root of 13252815 is about 236.6479310258.

The spelling of 13252815 in words is "thirteen million, two hundred fifty-two thousand, eight hundred fifteen".