23128704 has 96 divisors (see below), whose sum is σ = 70529940. Its totient is φ = 7249920.

The previous prime is 23128673. The next prime is 23128717. The reversal of 23128704 is 40782132.

It can be written as a sum of positive squares in 2 ways, for example, as 19713600 + 3415104 = 4440^2 + 1848^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18994 + ... + 20174.

Almost surely, 2^23128704 is an apocalyptic number.

23128704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23128704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35264970).

23128704 is an abundant number, since it is smaller than the sum of its proper divisors (47401236).

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

23128704 is a wasteful number, since it uses less digits than its factorization.

23128704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 23128704 is about 4809.2311235789. The cubic root of 23128704 is about 284.9161710978.

It can be divided in two parts, 23128 and 704, that added together give a palindrome (23832).

The spelling of 23128704 in words is "twenty-three million, one hundred twenty-eight thousand, seven hundred four".