23405004 has 96 divisors (see below), whose sum is σ = 70371840. Its totient is φ = 6588864.

The previous prime is 23404993. The next prime is 23405021. The reversal of 23405004 is 40050432.

It is a happy number.

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

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 31 ways as a sum of consecutive naturals, for example, 62562 + ... + 62934.

It is an arithmetic number, because the mean of its divisors is an integer number (733040).

Almost surely, 2^23405004 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 23405004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35185920).

23405004 is an abundant number, since it is smaller than the sum of its proper divisors (46966836).

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

23405004 is a wasteful number, since it uses less digits than its factorization.

23405004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 23405004 is about 4837.8718461737. The cubic root of 23405004 is about 286.0462376545.

Adding to 23405004 its reverse (40050432), we get a palindrome (63455436).

The spelling of 23405004 in words is "twenty-three million, four hundred five thousand, four".