28112288613 has 8 divisors (see below), whose sum is σ = 37769182176. Its totient is φ = 18598460400.

The previous prime is 28112288593. The next prime is 28112288639. The reversal of 28112288613 is 31688221182.

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

It is not a de Polignac number, because 28112288613 - 2¹⁰ = 28112287589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28112288693) 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, 35765878 + ... + 35766663.

It is an arithmetic number, because the mean of its divisors is an integer number (4721147772).

Almost surely, 2^28112288613 is an apocalyptic number.

It is an amenable number.

28112288613 is a deficient number, since it is larger than the sum of its proper divisors (9656893563).

28112288613 is a wasteful number, since it uses less digits than its factorization.

28112288613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71532675.

The product of its digits is 73728, while the sum is 42.

The spelling of 28112288613 in words is "twenty-eight billion, one hundred twelve million, two hundred eighty-eight thousand, six hundred thirteen".