2002020172 has 12 divisors (see below), whose sum is σ = 3516858576. Its totient is φ = 997203440.

The previous prime is 2002020149. The next prime is 2002020179. The reversal of 2002020172 is 2710202002.

It is not an unprimeable number, because it can be changed into a prime (2002020179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950479 + ... + 952582.

It is an arithmetic number, because the mean of its divisors is an integer number (293071548).

Almost surely, 2^2002020172 is an apocalyptic number.

It is an amenable number.

2002020172 is a deficient number, since it is larger than the sum of its proper divisors (1514838404).

2002020172 is a wasteful number, since it uses less digits than its factorization.

2002020172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903328 (or 1903326 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 2002020172 is about 44743.9400589622. The cubic root of 2002020172 is about 1260.3451166835.

Adding to 2002020172 its reverse (2710202002), we get a palindrome (4712222174).

The spelling of 2002020172 in words is "two billion, two million, twenty thousand, one hundred seventy-two".