28285695269 has 8 divisors (see below), whose sum is σ = 30665959800. Its totient is φ = 25934636736.

The previous prime is 28285695233. The next prime is 28285695271. The reversal of 28285695269 is 96259658282.

It can be written as a sum of positive squares in 4 ways, for example, as 1994694244 + 26291001025 = 44662^2 + 162145^2 .

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 28285695269 - 2⁸ = 28285695013 is a prime.

It is a super-2 number, since 2×28285695269² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285695169) 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, 7299482 + ... + 7303355.

It is an arithmetic number, because the mean of its divisors is an integer number (3833244975).

Almost surely, 2^28285695269 is an apocalyptic number.

It is an amenable number.

28285695269 is a deficient number, since it is larger than the sum of its proper divisors (2380264531).

28285695269 is a wasteful number, since it uses less digits than its factorization.

28285695269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14602999.

The product of its digits is 37324800, while the sum is 62.

The spelling of 28285695269 in words is "twenty-eight billion, two hundred eighty-five million, six hundred ninety-five thousand, two hundred sixty-nine".