23121632 has 48 divisors (see below), whose sum is σ = 50757840. Its totient is φ = 10303488.

The previous prime is 23121617. The next prime is 23121643. The reversal of 23121632 is 23612132.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 9218 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (1057455).

Almost surely, 2^23121632 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 23121632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25378920).

23121632 is an abundant number, since it is smaller than the sum of its proper divisors (27636208).

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

23121632 is a wasteful number, since it uses less digits than its factorization.

23121632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283 (or 2275 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 23121632 is about 4808.4958147013. The cubic root of 23121632 is about 284.8871287937.

Adding to 23121632 its reverse (23612132), we get a palindrome (46733764).

The spelling of 23121632 in words is "twenty-three million, one hundred twenty-one thousand, six hundred thirty-two".