23979220 has 24 divisors (see below), whose sum is σ = 50448384. Its totient is φ = 9574176.

The previous prime is 23979217. The next prime is 23979223. The reversal of 23979220 is 2297932.

It is an interprime number because it is at equal distance from previous prime (23979217) and next prime (23979223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23979223) 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, 21189 + ... + 22291.

It is an arithmetic number, because the mean of its divisors is an integer number (2102016).

Almost surely, 2^23979220 is an apocalyptic number.

23979220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23979220 is an abundant number, since it is smaller than the sum of its proper divisors (26469164).

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

23979220 is a wasteful number, since it uses less digits than its factorization.

23979220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 23979220 is about 4896.8581764229. The cubic root of 23979220 is about 288.3666401729.

The spelling of 23979220 in words is "twenty-three million, nine hundred seventy-nine thousand, two hundred twenty".