23289472 has 32 divisors (see below), whose sum is σ = 47286180. Its totient is φ = 11421696.

The previous prime is 23289467. The next prime is 23289479. The reversal of 23289472 is 27498232.

It can be written as a sum of positive squares in 2 ways, for example, as 23270976 + 18496 = 4824^2 + 136^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (23289479) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5068 + ... + 8500.

Almost surely, 2^23289472 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 23289472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23643090).

23289472 is an abundant number, since it is smaller than the sum of its proper divisors (23996708).

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

23289472 is an equidigital number, since it uses as much as digits as its factorization.

23289472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500 (or 3488 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 23289472 is about 4825.9167004829. The cubic root of 23289472 is about 285.5747997234.

The spelling of 23289472 in words is "twenty-three million, two hundred eighty-nine thousand, four hundred seventy-two".