23133328 has 20 divisors (see below), whose sum is σ = 47457900. Its totient is φ = 10886144.

The previous prime is 23133323. The next prime is 23133359. The reversal of 23133328 is 82333132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14653584 + 8479744 = 3828^2 + 2912^2 .

It is not an unprimeable number, because it can be changed into a prime (23133323) 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, 42253 + ... + 42796.

It is an arithmetic number, because the mean of its divisors is an integer number (2372895).

Almost surely, 2^23133328 is an apocalyptic number.

It is an amenable number.

23133328 is an abundant number, since it is smaller than the sum of its proper divisors (24324572).

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

23133328 is a wasteful number, since it uses less digits than its factorization.

23133328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85074 (or 85068 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 23133328 is about 4809.7118416803. The cubic root of 23133328 is about 284.9351570959.

It can be divided in two parts, 231333 and 28, that added together give a square (231361 = 481²).

The spelling of 23133328 in words is "twenty-three million, one hundred thirty-three thousand, three hundred twenty-eight".