13200781 has 8 divisors (see below), whose sum is σ = 15027264. Its totient is φ = 11478720.

The previous prime is 13200779. The next prime is 13200791. The reversal of 13200781 is 18700231.

13200781 is nontrivially palindromic in base 15.

13200781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13200781 - 2¹ = 13200779 is a prime.

It is a super-2 number, since 2×13200781² = 348521238019922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13200701) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25836 + ... + 26341.

It is an arithmetic number, because the mean of its divisors is an integer number (1878408).

Almost surely, 2^13200781 is an apocalyptic number.

13200781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13200781 is a deficient number, since it is larger than the sum of its proper divisors (1826483).

13200781 is a wasteful number, since it uses less digits than its factorization.

13200781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52211.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 13200781 is about 3633.2879049148. The cubic root of 13200781 is about 236.3378110165.

The spelling of 13200781 in words is "thirteen million, two hundred thousand, seven hundred eighty-one".