2002028491 has 8 divisors (see below), whose sum is σ = 2089592064. Its totient is φ = 1914508200.

The previous prime is 2002028473. The next prime is 2002028527. The reversal of 2002028491 is 1948202002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2002028491 - 2¹⁷ = 2001897419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002028411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114940 + ... + 131206.

It is an arithmetic number, because the mean of its divisors is an integer number (261199008).

Almost surely, 2^2002028491 is an apocalyptic number.

2002028491 is a deficient number, since it is larger than the sum of its proper divisors (87563573).

2002028491 is a wasteful number, since it uses less digits than its factorization.

2002028491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21641.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2002028491 is about 44744.0330211750. The cubic root of 2002028491 is about 1260.3468623862.

The spelling of 2002028491 in words is "two billion, two million, twenty-eight thousand, four hundred ninety-one".