28645835794 has 8 divisors (see below), whose sum is σ = 43156390860. Its totient is φ = 14260372176.

The previous prime is 28645835791. The next prime is 28645835807. The reversal of 28645835794 is 49753854682.

It can be written as a sum of positive squares in 2 ways, for example, as 20965592025 + 7680243769 = 144795^2 + 87637^2 .

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

It is a super-2 number, since 2×28645835794² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28645835791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31272289 + ... + 31273204.

Almost surely, 2^28645835794 is an apocalyptic number.

28645835794 is a deficient number, since it is larger than the sum of its proper divisors (14510555066).

28645835794 is a wasteful number, since it uses less digits than its factorization.

28645835794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62545724.

The product of its digits is 58060800, while the sum is 61.

The spelling of 28645835794 in words is "twenty-eight billion, six hundred forty-five million, eight hundred thirty-five thousand, seven hundred ninety-four".