28898980009 has 9 divisors (see below), whose sum is σ = 29132202333. Its totient is φ = 28667614092.

The previous prime is 28898980007. The next prime is 28898980079. The reversal of 28898980009 is 90008989882.

The square root of 28898980009 is 169997.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 28898980009 - 2¹ = 28898980007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28898980003) 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 8 ways as a sum of consecutive naturals, for example, 23628972 + ... + 23630194.

Almost surely, 2^28898980009 is an apocalyptic number.

28898980009 is the 169997-th square number.

28898980009 is the 84999-th centered octagonal number.

It is an amenable number.

28898980009 is a deficient number, since it is larger than the sum of its proper divisors (233222324).

28898980009 is an frugal number, since it uses more digits than its factorization.

28898980009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 61.

It can be divided in two parts, 2889 and 8980009, that added together give a palindrome (8982898).

The spelling of 28898980009 in words is "twenty-eight billion, eight hundred ninety-eight million, nine hundred eighty thousand, nine".