23021444 has 6 divisors (see below), whose sum is σ = 40287534. Its totient is φ = 11510720.

The previous prime is 23021443. The next prime is 23021473. The reversal of 23021444 is 44412032.

It can be written as a sum of positive squares in only one way, i.e., 22278400 + 743044 = 4720^2 + 862^2 .

It is not an unprimeable number, because it can be changed into a prime (23021441) 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 as a sum of consecutive naturals, namely, 2877677 + ... + 2877684.

It is an arithmetic number, because the mean of its divisors is an integer number (6714589).

Almost surely, 2^23021444 is an apocalyptic number.

It is an amenable number.

23021444 is a deficient number, since it is larger than the sum of its proper divisors (17266090).

23021444 is a wasteful number, since it uses less digits than its factorization.

23021444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5755365 (or 5755363 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 23021444 is about 4798.0666939925. The cubic root of 23021444 is about 284.4750529715.

Adding to 23021444 its reverse (44412032), we get a palindrome (67433476).

The spelling of 23021444 in words is "twenty-three million, twenty-one thousand, four hundred forty-four".