11290820 has 24 divisors (see below), whose sum is σ = 24476928. Its totient is φ = 4370400.

The previous prime is 11290817. The next prime is 11290843. The reversal of 11290820 is 2809211.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8486 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (1019872).

Almost surely, 2^11290820 is an apocalyptic number.

11290820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11290820 is an abundant number, since it is smaller than the sum of its proper divisors (13186108).

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

11290820 is a wasteful number, since it uses less digits than its factorization.

11290820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18251 (or 18249 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 11290820 is about 3360.1815427146. The cubic root of 11290820 is about 224.3409190095.

The spelling of 11290820 in words is "eleven million, two hundred ninety thousand, eight hundred twenty".