11823220 has 12 divisors (see below), whose sum is σ = 24828804. Its totient is φ = 4729280.

The previous prime is 11823209. The next prime is 11823241. The reversal of 11823220 is 2232811.

It can be written as a sum of positive squares in 2 ways, for example, as 5702544 + 6120676 = 2388^2 + 2474^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295561 + ... + 295600.

It is an arithmetic number, because the mean of its divisors is an integer number (2069067).

Almost surely, 2^11823220 is an apocalyptic number.

11823220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11823220 is an abundant number, since it is smaller than the sum of its proper divisors (13005584).

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

11823220 is a wasteful number, since it uses less digits than its factorization.

11823220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591170 (or 591168 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 11823220 is about 3438.4909480759. The cubic root of 11823220 is about 227.8130456770.

The spelling of 11823220 in words is "eleven million, eight hundred twenty-three thousand, two hundred twenty".