28522805569 has 8 divisors (see below), whose sum is σ = 29352416000. Its totient is φ = 27696285936.

The previous prime is 28522805561. The next prime is 28522805603. The reversal of 28522805569 is 96550822582.

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 28522805569 - 2³ = 28522805561 is a prime.

It is a super-2 number, since 2×28522805569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28522805561) 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, 753969 + ... + 790894.

It is an arithmetic number, because the mean of its divisors is an integer number (3669052000).

Almost surely, 2^28522805569 is an apocalyptic number.

It is an amenable number.

28522805569 is a deficient number, since it is larger than the sum of its proper divisors (829610431).

28522805569 is a wasteful number, since it uses less digits than its factorization.

28522805569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545399.

The product of its (nonzero) digits is 3456000, while the sum is 52.

The spelling of 28522805569 in words is "twenty-eight billion, five hundred twenty-two million, eight hundred five thousand, five hundred sixty-nine".