11323220 has 12 divisors (see below), whose sum is σ = 23778804. Its totient is φ = 4529280.

The previous prime is 11323217. The next prime is 11323223. The reversal of 11323220 is 2232311.

It is a happy number.

11323220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11323217) and next prime (11323223).

It can be written as a sum of positive squares in 2 ways, for example, as 4343056 + 6980164 = 2084^2 + 2642^2 .

It is a super-2 number, since 2×11323220² = 256430622336800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11323195 and 11323204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283061 + ... + 283100.

It is an arithmetic number, because the mean of its divisors is an integer number (1981567).

Almost surely, 2^11323220 is an apocalyptic number.

11323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11323220 is an abundant number, since it is smaller than the sum of its proper divisors (12455584).

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

11323220 is a wasteful number, since it uses less digits than its factorization.

11323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566170 (or 566168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 11323220 is about 3364.9992570579. Note that the first 3 decimals coincide. The cubic root of 11323220 is about 224.5553027350. Note that the first 3 decimals are identical.

Adding to 11323220 its reverse (2232311), we get a palindrome (13555531).

Subtracting from 11323220 its reverse (2232311), we obtain a palindrome (9090909).

The spelling of 11323220 in words is "eleven million, three hundred twenty-three thousand, two hundred twenty".