23403288 has 64 divisors (see below), whose sum is σ = 65232000. Its totient is φ = 6953472.

The previous prime is 23403241. The next prime is 23403293. The reversal of 23403288 is 88230432.

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 15 ways as a sum of consecutive naturals, for example, 6243 + ... + 9261.

It is an arithmetic number, because the mean of its divisors is an integer number (1019250).

Almost surely, 2^23403288 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 23403288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32616000).

23403288 is an abundant number, since it is smaller than the sum of its proper divisors (41828712).

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

23403288 is a wasteful number, since it uses less digits than its factorization.

23403288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 3060 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 23403288 is about 4837.6944922142. The cubic root of 23403288 is about 286.0392467372.

The spelling of 23403288 in words is "twenty-three million, four hundred three thousand, two hundred eighty-eight".