23621104 has 80 divisors (see below), whose sum is σ = 53468800. Its totient is φ = 10015488.

The previous prime is 23621099. The next prime is 23621107. The reversal of 23621104 is 40112632.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23621107) 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, 169867 + ... + 170005.

It is an arithmetic number, because the mean of its divisors is an integer number (668360).

Almost surely, 2^23621104 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 23621104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26734400).

23621104 is an abundant number, since it is smaller than the sum of its proper divisors (29847696).

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

23621104 is a wasteful number, since it uses less digits than its factorization.

23621104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 23621104 is about 4860.1547300472. The cubic root of 23621104 is about 286.9239034696.

Adding to 23621104 its reverse (40112632), we get a palindrome (63733736).

The spelling of 23621104 in words is "twenty-three million, six hundred twenty-one thousand, one hundred four".