2002721892 has 24 divisors (see below), whose sum is σ = 4823761152. Its totient is φ = 646039200.

The previous prime is 2002721887. The next prime is 2002721893. The reversal of 2002721892 is 2981272002.

It is not an unprimeable number, because it can be changed into a prime (2002721893) 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, 2691459 + ... + 2692202.

It is an arithmetic number, because the mean of its divisors is an integer number (200990048).

Almost surely, 2^2002721892 is an apocalyptic number.

It is an amenable number.

2002721892 is an abundant number, since it is smaller than the sum of its proper divisors (2821039260).

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

2002721892 is a wasteful number, since it uses less digits than its factorization.

2002721892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383699 (or 5383697 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 2002721892 is about 44751.7808807650. The cubic root of 2002721892 is about 1260.4923523070.

Adding to 2002721892 its reverse (2981272002), we get a palindrome (4983993894).

The spelling of 2002721892 in words is "two billion, two million, seven hundred twenty-one thousand, eight hundred ninety-two".