23104404 has 18 divisors (see below), whose sum is σ = 58402890. Its totient is φ = 7701456.

The previous prime is 23104381. The next prime is 23104409. The reversal of 23104404 is 40440132.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 636804 = 4740^2 + 798^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23104409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320859 + ... + 320930.

It is an arithmetic number, because the mean of its divisors is an integer number (3244605).

Almost surely, 2^23104404 is an apocalyptic number.

It is an amenable number.

23104404 is an abundant number, since it is smaller than the sum of its proper divisors (35298486).

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

23104404 is a wasteful number, since it uses less digits than its factorization.

23104404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641799 (or 641794 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 23104404 is about 4806.7040682780. The cubic root of 23104404 is about 284.8163544505.

Adding to 23104404 its reverse (40440132), we get a palindrome (63544536).

The spelling of 23104404 in words is "twenty-three million, one hundred four thousand, four hundred four".