28694768794 has 8 divisors (see below), whose sum is σ = 44526365460. Its totient is φ = 13852646976.

The previous prime is 28694768761. The next prime is 28694768801. The reversal of 28694768794 is 49786749682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28354181769 + 340587025 = 168387^2 + 18455^2 .

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

It is a super-2 number, since 2×28694768794² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247368639 + ... + 247368754.

Almost surely, 2^28694768794 is an apocalyptic number.

28694768794 is a deficient number, since it is larger than the sum of its proper divisors (15831596666).

28694768794 is a wasteful number, since it uses less digits than its factorization.

28694768794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494737424.

The product of its digits is 292626432, while the sum is 70.

The spelling of 28694768794 in words is "twenty-eight billion, six hundred ninety-four million, seven hundred sixty-eight thousand, seven hundred ninety-four".