23232220 has 24 divisors (see below), whose sum is σ = 53223408. Its totient is φ = 8448000.

The previous prime is 23232211. The next prime is 23232221. The reversal of 23232220 is 2223232.

It is a super-2 number, since 2×23232220² = 1079472092256800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23232194 and 23232203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23232221) 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, 52581 + ... + 53020.

It is an arithmetic number, because the mean of its divisors is an integer number (2217642).

Almost surely, 2^23232220 is an apocalyptic number.

23232220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23232220 is an abundant number, since it is smaller than the sum of its proper divisors (29991188).

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

23232220 is a wasteful number, since it uses less digits than its factorization.

23232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105621 (or 105619 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23232220 is about 4819.9813277647. The cubic root of 23232220 is about 285.3406002798.

Adding to 23232220 its reverse (2223232), we get a palindrome (25455452).

The spelling of 23232220 in words is "twenty-three million, two hundred thirty-two thousand, two hundred twenty".