11811290 has 16 divisors (see below), whose sum is σ = 21530880. Its totient is φ = 4664400.

The previous prime is 11811287. The next prime is 11811299. The reversal of 11811290 is 9211811.

It is not an unprimeable number, because it can be changed into a prime (11811299) 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, 6686 + ... + 8265.

It is an arithmetic number, because the mean of its divisors is an integer number (1345680).

Almost surely, 2^11811290 is an apocalyptic number.

11811290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11811290 is a deficient number, since it is larger than the sum of its proper divisors (9719590).

11811290 is a wasteful number, since it uses less digits than its factorization.

11811290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15037.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 11811290 is about 3436.7557376107. The cubic root of 11811290 is about 227.7363963867.

The spelling of 11811290 in words is "eleven million, eight hundred eleven thousand, two hundred ninety".