11808290 has 16 divisors (see below), whose sum is σ = 22890168. Its totient is φ = 4359936.

The previous prime is 11808271. The next prime is 11808299. The reversal of 11808290 is 9280811.

It can be written as a sum of positive squares in 4 ways, for example, as 8300161 + 3508129 = 2881^2 + 1873^2 .

It is not an unprimeable number, because it can be changed into a prime (11808299) 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, 45287 + ... + 45546.

Almost surely, 2^11808290 is an apocalyptic number.

11808290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11808290 is a deficient number, since it is larger than the sum of its proper divisors (11081878).

11808290 is a wasteful number, since it uses less digits than its factorization.

11808290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90853.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 11808290 is about 3436.3192517576. The cubic root of 11808290 is about 227.7171135073.

The spelling of 11808290 in words is "eleven million, eight hundred eight thousand, two hundred ninety".