23044440 has 32 divisors (see below), whose sum is σ = 69133680. Its totient is φ = 6145152.

The previous prime is 23044409. The next prime is 23044447. The reversal of 23044440 is 4444032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23044447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95899 + ... + 96138.

Almost surely, 2^23044440 is an apocalyptic number.

23044440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23044440 is an abundant number, since it is smaller than the sum of its proper divisors (46089240).

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

23044440 is a wasteful number, since it uses less digits than its factorization.

23044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192051 (or 192047 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 23044440 is about 4800.4624777202. The cubic root of 23044440 is about 284.5697416647.

Adding to 23044440 its reverse (4444032), we get a palindrome (27488472).

The spelling of 23044440 in words is "twenty-three million, forty-four thousand, four hundred forty".