13200815 has 4 divisors (see below), whose sum is σ = 15840984. Its totient is φ = 10560648.

The previous prime is 13200797. The next prime is 13200833. The reversal of 13200815 is 51800231.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13200797) and next prime (13200833).

It is a cyclic number.

It is not a de Polignac number, because 13200815 - 2¹² = 13196719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320077 + ... + 1320086.

It is an arithmetic number, because the mean of its divisors is an integer number (3960246).

Almost surely, 2^13200815 is an apocalyptic number.

13200815 is a deficient number, since it is larger than the sum of its proper divisors (2640169).

13200815 is an equidigital number, since it uses as much as digits as its factorization.

13200815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640168.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 13200815 is about 3633.2925838693. The cubic root of 13200815 is about 236.3380139206.

The spelling of 13200815 in words is "thirteen million, two hundred thousand, eight hundred fifteen".