10811990 has 32 divisors (see below), whose sum is σ = 22365504. Its totient is φ = 3686400.

The previous prime is 10811989. The next prime is 10812023. The reversal of 10811990 is 9911801.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 17690 + ... + 18290.

It is an arithmetic number, because the mean of its divisors is an integer number (698922).

Almost surely, 2^10811990 is an apocalyptic number.

10811990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10811990 is an abundant number, since it is smaller than the sum of its proper divisors (11553514).

10811990 is a wasteful number, since it uses less digits than its factorization.

10811990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 10811990 is about 3288.1590594130. The cubic root of 10811990 is about 221.1236588102.

The spelling of 10811990 in words is "ten million, eight hundred eleven thousand, nine hundred ninety".