23021244 has 36 divisors (see below), whose sum is σ = 60201960. Its totient is φ = 7408800.

The previous prime is 23021237. The next prime is 23021249. The reversal of 23021244 is 44212032.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9982 + ... + 12069.

Almost surely, 2^23021244 is an apocalyptic number.

It is an amenable number.

23021244 is an abundant number, since it is smaller than the sum of its proper divisors (37180716).

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

23021244 is a wasteful number, since it uses less digits than its factorization.

23021244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22090 (or 22085 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 23021244 is about 4798.0458522194. The cubic root of 23021244 is about 284.4742291718.

Adding to 23021244 its reverse (44212032), we get a palindrome (67233276).

The spelling of 23021244 in words is "twenty-three million, twenty-one thousand, two hundred forty-four".