28811529489 has 8 divisors (see below), whose sum is σ = 38580246432. Its totient is φ = 19125249440.

The previous prime is 28811529451. The next prime is 28811529511. The reversal of 28811529489 is 98492511882.

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 28811529489 - 2⁸ = 28811529233 is a prime.

It is a super-2 number, since 2×28811529489² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28811529449) 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, 20608407 + ... + 20609804.

It is an arithmetic number, because the mean of its divisors is an integer number (4822530804).

Almost surely, 2^28811529489 is an apocalyptic number.

It is an amenable number.

28811529489 is a deficient number, since it is larger than the sum of its proper divisors (9768716943).

28811529489 is a wasteful number, since it uses less digits than its factorization.

28811529489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41218447.

The product of its digits is 3317760, while the sum is 57.

The spelling of 28811529489 in words is "twenty-eight billion, eight hundred eleven million, five hundred twenty-nine thousand, four hundred eighty-nine".