22411220 has 24 divisors (see below), whose sum is σ = 50684424. Its totient is φ = 8274816.

The previous prime is 22411211. The next prime is 22411231. The reversal of 22411220 is 2211422.

It can be written as a sum of positive squares in 4 ways, for example, as 1214404 + 21196816 = 1102^2 + 4604^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22411195 and 22411204.

It is a congruent number.

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, 42839 + ... + 43358.

It is an arithmetic number, because the mean of its divisors is an integer number (2111851).

Almost surely, 2^22411220 is an apocalyptic number.

22411220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22411220 is an abundant number, since it is smaller than the sum of its proper divisors (28273204).

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

22411220 is a wasteful number, since it uses less digits than its factorization.

22411220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86219 (or 86217 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22411220 is about 4734.0490069284. The cubic root of 22411220 is about 281.9390073144.

Adding to 22411220 its reverse (2211422), we get a palindrome (24622642).

The spelling of 22411220 in words is "twenty-two million, four hundred eleven thousand, two hundred twenty".