2005533444 has 48 divisors (see below), whose sum is σ = 4723992000. Its totient is φ = 662192256.

The previous prime is 2005533443. The next prime is 2005533473. The reversal of 2005533444 is 4443355002.

It is a super-2 number, since 2×2005533444² = 8044328790005002272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2005533443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747834 + ... + 750510.

It is an arithmetic number, because the mean of its divisors is an integer number (98416500).

Almost surely, 2^2005533444 is an apocalyptic number.

It is an amenable number.

2005533444 is an abundant number, since it is smaller than the sum of its proper divisors (2718458556).

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

2005533444 is a wasteful number, since it uses less digits than its factorization.

2005533444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 2005533444 is about 44783.1826024011. The cubic root of 2005533444 is about 1261.0819303700.

Adding to 2005533444 its reverse (4443355002), we get a palindrome (6448888446).

The spelling of 2005533444 in words is "two billion, five million, five hundred thirty-three thousand, four hundred forty-four".