11100990 has 16 divisors (see below), whose sum is σ = 26642448. Its totient is φ = 2960256.

The previous prime is 11100989. The next prime is 11101033. The reversal of 11100990 is 9900111.

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 7 ways as a sum of consecutive naturals, for example, 184987 + ... + 185046.

It is an arithmetic number, because the mean of its divisors is an integer number (1665153).

Almost surely, 2^11100990 is an apocalyptic number.

11100990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11100990 is an abundant number, since it is smaller than the sum of its proper divisors (15541458).

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

11100990 is a wasteful number, since it uses less digits than its factorization.

11100990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370043.

The product of its (nonzero) digits is 81, while the sum is 21.

The square root of 11100990 is about 3331.8148207846. The cubic root of 11100990 is about 223.0765420586.

It can be divided in two parts, 11100 and 990, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 11100990 in words is "eleven million, one hundred thousand, nine hundred ninety".