23421444 has 96 divisors (see below), whose sum is σ = 62052480. Its totient is φ = 6838272.

The previous prime is 23421443. The next prime is 23421469. The reversal of 23421444 is 44412432.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218839 + ... + 218945.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^23421444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23421444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31026240).

23421444 is an abundant number, since it is smaller than the sum of its proper divisors (38631036).

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

23421444 is a wasteful number, since it uses less digits than its factorization.

23421444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 195 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 23421444 is about 4839.5706421128. The cubic root of 23421444 is about 286.1131962633.

Adding to 23421444 its reverse (44412432), we get a palindrome (67833876).

The spelling of 23421444 in words is "twenty-three million, four hundred twenty-one thousand, four hundred forty-four".