23004440 has 32 divisors (see below), whose sum is σ = 54486000. Its totient is φ = 8717184.

The previous prime is 23004433. The next prime is 23004463. The reversal of 23004440 is 4440032.

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 7 ways as a sum of consecutive naturals, for example, 14375 + ... + 15894.

Almost surely, 2^23004440 is an apocalyptic number.

23004440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23004440 is an abundant number, since it is smaller than the sum of its proper divisors (31481560).

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

23004440 is a wasteful number, since it uses less digits than its factorization.

23004440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30299 (or 30295 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 23004440 is about 4796.2944029740. The cubic root of 23004440 is about 284.4049964735.

Adding to 23004440 its reverse (4440032), we get a palindrome (27444472).

The spelling of 23004440 in words is "twenty-three million, four thousand, four hundred forty".