23609220 has 24 divisors (see below), whose sum is σ = 66105984. Its totient is φ = 6295776.

The previous prime is 23609207. The next prime is 23609231. The reversal of 23609220 is 2290632.

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, 196684 + ... + 196803.

It is an arithmetic number, because the mean of its divisors is an integer number (2754416).

Almost surely, 2^23609220 is an apocalyptic number.

23609220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23609220 is an abundant number, since it is smaller than the sum of its proper divisors (42496764).

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

23609220 is a wasteful number, since it uses less digits than its factorization.

23609220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393499 (or 393497 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 23609220 is about 4858.9319814132. The cubic root of 23609220 is about 286.8757773580.

Adding to 23609220 its reverse (2290632), we get a palindrome (25899852).

The spelling of 23609220 in words is "twenty-three million, six hundred nine thousand, two hundred twenty".