244002021 has 16 divisors (see below), whose sum is σ = 328326528. Its totient is φ = 161179200.

The previous prime is 244002001. The next prime is 244002049. The reversal of 244002021 is 120200442.

It is not a de Polignac number, because 244002021 - 2⁷ = 244001893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244002001) 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, 296791 + ... + 297611.

It is an arithmetic number, because the mean of its divisors is an integer number (20520408).

Almost surely, 2^244002021 is an apocalyptic number.

It is an amenable number.

244002021 is a deficient number, since it is larger than the sum of its proper divisors (84324507).

244002021 is a wasteful number, since it uses less digits than its factorization.

244002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 244002021 is about 15620.5640423129. The cubic root of 244002021 is about 624.8817021971.

Adding to 244002021 its reverse (120200442), we get a palindrome (364202463).

The spelling of 244002021 in words is "two hundred forty-four million, two thousand, twenty-one".