28762774689 has 8 divisors (see below), whose sum is σ = 41836763232. Its totient is φ = 17431984640.

The previous prime is 28762774687. The next prime is 28762774699. The reversal of 28762774689 is 98647726782.

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 28762774689 - 2¹ = 28762774687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28762774687) 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, 435799584 + ... + 435799649.

It is an arithmetic number, because the mean of its divisors is an integer number (5229595404).

Almost surely, 2^28762774689 is an apocalyptic number.

It is an amenable number.

28762774689 is a deficient number, since it is larger than the sum of its proper divisors (13073988543).

28762774689 is a wasteful number, since it uses less digits than its factorization.

28762774689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871599247.

The product of its digits is 113799168, while the sum is 66.

The spelling of 28762774689 in words is "twenty-eight billion, seven hundred sixty-two million, seven hundred seventy-four thousand, six hundred eighty-nine".