10800891 has 8 divisors (see below), whose sum is σ = 16001360. Its totient is φ = 7200576.

The previous prime is 10800883. The next prime is 10800893. The reversal of 10800891 is 19800801.

It is not a de Polignac number, because 10800891 - 2³ = 10800883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 400033 = 10800891 / (1 + 0 + 8 + 0 + 0 + 8 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10800893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199990 + ... + 200043.

It is an arithmetic number, because the mean of its divisors is an integer number (2000170).

Almost surely, 2^10800891 is an apocalyptic number.

10800891 is a deficient number, since it is larger than the sum of its proper divisors (5200469).

10800891 is an equidigital number, since it uses as much as digits as its factorization.

10800891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400042 (or 400036 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 10800891 is about 3286.4709035681. The cubic root of 10800891 is about 221.0479684032.

The spelling of 10800891 in words is "ten million, eight hundred thousand, eight hundred ninety-one".