2002020144 has 80 divisors (see below), whose sum is σ = 5316719232. Its totient is φ = 648797184.

The previous prime is 2002020121. The next prime is 2002020149. The reversal of 2002020144 is 4410202002.

It is not an unprimeable number, because it can be changed into a prime (2002020149) 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, 466392 + ... + 470664.

Almost surely, 2^2002020144 is an apocalyptic number.

2002020144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2002020144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2658359616).

2002020144 is an abundant number, since it is smaller than the sum of its proper divisors (3314699088).

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

2002020144 is a wasteful number, since it uses less digits than its factorization.

2002020144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554 (or 4548 counting only the distinct ones).

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

The square root of 2002020144 is about 44743.9397460706. The cubic root of 2002020144 is about 1260.3451108078.

Adding to 2002020144 its reverse (4410202002), we get a palindrome (6412222146).

The spelling of 2002020144 in words is "two billion, two million, twenty thousand, one hundred forty-four".