28243296369 has 6 divisors (see below), whose sum is σ = 40795872546. Its totient is φ = 18828864240.

The previous prime is 28243296349. The next prime is 28243296371. The reversal of 28243296369 is 96369234282.

28243296369 is a `hidden beast` number, since 282 + 4 + 329 + 6 + 36 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25636172769 + 2607123600 = 160113^2 + 51060^2 .

It is not a de Polignac number, because 28243296369 - 2¹⁷ = 28243165297 is a prime.

It is a super-2 number, since 2×28243296369² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28243296349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1569072012 + ... + 1569072029.

It is an arithmetic number, because the mean of its divisors is an integer number (6799312091).

Almost surely, 2^28243296369 is an apocalyptic number.

It is an amenable number.

28243296369 is a deficient number, since it is larger than the sum of its proper divisors (12552576177).

28243296369 is a wasteful number, since it uses less digits than its factorization.

28243296369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138144047 (or 3138144044 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 54.

The spelling of 28243296369 in words is "twenty-eight billion, two hundred forty-three million, two hundred ninety-six thousand, three hundred sixty-nine".