23161760 has 72 divisors (see below), whose sum is σ = 57895236. Its totient is φ = 8755200.

The previous prime is 23161753. The next prime is 23161781. The reversal of 23161760 is 6716132.

It can be written as a sum of positive squares in 2 ways, for example, as 21492496 + 1669264 = 4636^2 + 1292^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57560 + ... + 57960.

Almost surely, 2^23161760 is an apocalyptic number.

23161760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23161760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28947618).

23161760 is an abundant number, since it is smaller than the sum of its proper divisors (34733476).

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

23161760 is a wasteful number, since it uses less digits than its factorization.

23161760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 23161760 is about 4812.6666204922. Note that the first 4 decimals coincide. The cubic root of 23161760 is about 285.0518424210.

Adding to 23161760 its reverse (6716132), we get a palindrome (29877892).

The spelling of 23161760 in words is "twenty-three million, one hundred sixty-one thousand, seven hundred sixty".