23162720 has 48 divisors (see below), whose sum is σ = 62542368. Its totient is φ = 7941120.

The previous prime is 23162719. The next prime is 23162723. The reversal of 23162720 is 2726132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23162723) 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, 9221 + ... + 11460.

It is an arithmetic number, because the mean of its divisors is an integer number (1302966).

Almost surely, 2^23162720 is an apocalyptic number.

23162720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23162720 is an abundant number, since it is smaller than the sum of its proper divisors (39379648).

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

23162720 is a wasteful number, since it uses less digits than its factorization.

23162720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20703 (or 20695 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 23162720 is about 4812.7663562654. The cubic root of 23162720 is about 285.0557806074.

Adding to 23162720 its reverse (2726132), we get a palindrome (25888852).

The spelling of 23162720 in words is "twenty-three million, one hundred sixty-two thousand, seven hundred twenty".