10981806 has 32 divisors (see below), whose sum is σ = 24098688. Its totient is φ = 3308640.

The previous prime is 10981801. The next prime is 10981849. The reversal of 10981806 is 60818901.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10981801) 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 15 ways as a sum of consecutive naturals, for example, 14616 + ... + 15348.

It is an arithmetic number, because the mean of its divisors is an integer number (753084).

Almost surely, 2^10981806 is an apocalyptic number.

10981806 is an abundant number, since it is smaller than the sum of its proper divisors (13116882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10981806 is a wasteful number, since it uses less digits than its factorization.

10981806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 10981806 is about 3313.8808065469. The cubic root of 10981806 is about 222.2753259571.

The spelling of 10981806 in words is "ten million, nine hundred eighty-one thousand, eight hundred six".