13812245 has 16 divisors (see below), whose sum is σ = 17962560. Its totient is φ = 10155264.

The previous prime is 13812233. The next prime is 13812263. The reversal of 13812245 is 54221831.

It is a cyclic number.

It is not a de Polignac number, because 13812245 - 2⁴ = 13812229 is a prime.

It is a super-2 number, since 2×13812245² = 381556223880050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1766 + ... + 5544.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^13812245 is an apocalyptic number.

It is an amenable number.

13812245 is a deficient number, since it is larger than the sum of its proper divisors (4150315).

13812245 is a wasteful number, since it uses less digits than its factorization.

13812245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844.

The product of its digits is 1920, while the sum is 26.

The square root of 13812245 is about 3716.4828803588. The cubic root of 13812245 is about 239.9319540888.

The spelling of 13812245 in words is "thirteen million, eight hundred twelve thousand, two hundred forty-five".