23995220 has 24 divisors (see below), whose sum is σ = 51342984. Its totient is φ = 9416576.

The previous prime is 23995219. The next prime is 23995229. The reversal of 23995220 is 2259932.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2298256 + 21696964 = 1516^2 + 4658^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23995229) 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, 10259 + ... + 12378.

It is an arithmetic number, because the mean of its divisors is an integer number (2139291).

Almost surely, 2^23995220 is an apocalyptic number.

23995220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23995220 is an abundant number, since it is smaller than the sum of its proper divisors (27347764).

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

23995220 is a wasteful number, since it uses less digits than its factorization.

23995220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22699 (or 22697 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 23995220 is about 4898.4916045656. The cubic root of 23995220 is about 288.4307629207.

It can be divided in two parts, 239 and 95220, that added together give a palindrome (95459).

The spelling of 23995220 in words is "twenty-three million, nine hundred ninety-five thousand, two hundred twenty".