23224220 has 24 divisors (see below), whose sum is σ = 49442064. Its totient is φ = 9161856.

The previous prime is 23224219. The next prime is 23224231. The reversal of 23224220 is 2242232.

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, 6494 + ... + 9413.

It is an arithmetic number, because the mean of its divisors is an integer number (2060086).

Almost surely, 2^23224220 is an apocalyptic number.

23224220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23224220 is an abundant number, since it is smaller than the sum of its proper divisors (26217844).

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

23224220 is a wasteful number, since it uses less digits than its factorization.

23224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15989 (or 15987 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 23224220 is about 4819.1513775768. The cubic root of 23224220 is about 285.3078442357.

Adding to 23224220 its reverse (2242232), we get a palindrome (25466452).

The spelling of 23224220 in words is "twenty-three million, two hundred twenty-four thousand, two hundred twenty".