2002323444 has 144 divisors (see below), whose sum is σ = 5594412096. Its totient is φ = 550860800.

The previous prime is 2002323439. The next prime is 2002323451. The reversal of 2002323444 is 4443232002.

It is a super-2 number, since 2×2002323444² = 8018598348784042272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1886674 + ... + 1887734.

It is an arithmetic number, because the mean of its divisors is an integer number (38850084).

Almost surely, 2^2002323444 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 2002323444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2797206048).

2002323444 is an abundant number, since it is smaller than the sum of its proper divisors (3592088652).

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

2002323444 is a wasteful number, since it uses less digits than its factorization.

2002323444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 2002323444 is about 44747.3289035223. The cubic root of 2002323444 is about 1260.4087537521.

Adding to 2002323444 its reverse (4443232002), we get a palindrome (6445555446).

The spelling of 2002323444 in words is "two billion, two million, three hundred twenty-three thousand, four hundred forty-four".