23120636 has 48 divisors (see below), whose sum is σ = 50813952. Its totient is φ = 8942400.

The previous prime is 23120623. The next prime is 23120639. The reversal of 23120636 is 63602132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83330 + ... + 83606.

It is an arithmetic number, because the mean of its divisors is an integer number (1058624).

Almost surely, 2^23120636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23120636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25406976).

23120636 is an abundant number, since it is smaller than the sum of its proper divisors (27693316).

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

23120636 is a wasteful number, since it uses less digits than its factorization.

23120636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 23120636 is about 4808.3922468950. The cubic root of 23120636 is about 284.8830380840.

Adding to 23120636 its reverse (63602132), we get a palindrome (86722768).

The spelling of 23120636 in words is "twenty-three million, one hundred twenty thousand, six hundred thirty-six".