28650469789 has 8 divisors (see below), whose sum is σ = 29125700352. Its totient is φ = 28178335680.

The previous prime is 28650469751. The next prime is 28650469811. The reversal of 28650469789 is 98796405682.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28650469789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28650469789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28650469709) 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, 755452 + ... + 792469.

It is an arithmetic number, because the mean of its divisors is an integer number (3640712544).

Almost surely, 2^28650469789 is an apocalyptic number.

It is an amenable number.

28650469789 is a deficient number, since it is larger than the sum of its proper divisors (475230563).

28650469789 is a wasteful number, since it uses less digits than its factorization.

28650469789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548227.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 28650469789 in words is "twenty-eight billion, six hundred fifty million, four hundred sixty-nine thousand, seven hundred eighty-nine".