223002444 has 96 divisors (see below), whose sum is σ = 618218496. Its totient is φ = 61240320.

The previous prime is 223002433. The next prime is 223002467. The reversal of 223002444 is 444200322.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 223002444.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250969 + ... + 251855.

It is an arithmetic number, because the mean of its divisors is an integer number (6439776).

Almost surely, 2^223002444 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 223002444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309109248).

223002444 is an abundant number, since it is smaller than the sum of its proper divisors (395216052).

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

223002444 is a wasteful number, since it uses less digits than its factorization.

223002444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 1013 counting only the distinct ones).

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

The square root of 223002444 is about 14933.2663540165. The cubic root of 223002444 is about 606.4149147978.

Adding to 223002444 its reverse (444200322), we get a palindrome (667202766).

It can be divided in two parts, 223002 and 444, that added together give a triangular number (223446 = T₆₆₈).

The spelling of 223002444 in words is "two hundred twenty-three million, two thousand, four hundred forty-four".