23720032 has 48 divisors (see below), whose sum is σ = 56518560. Its totient is φ = 9566208.

The previous prime is 23720027. The next prime is 23720063. The reversal of 23720032 is 23002732.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23719991 and 23720009.

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, 694 + ... + 6922.

It is an arithmetic number, because the mean of its divisors is an integer number (1177470).

Almost surely, 2^23720032 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 23720032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28259280).

23720032 is an abundant number, since it is smaller than the sum of its proper divisors (32798528).

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

23720032 is a wasteful number, since it uses less digits than its factorization.

23720032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263 (or 6255 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 23720032 is about 4870.3215499595. The cubic root of 23720032 is about 287.3239027463.

Adding to 23720032 its reverse (23002732), we get a palindrome (46722764).

The spelling of 23720032 in words is "twenty-three million, seven hundred twenty thousand, thirty-two".