28423084569 has 16 divisors (see below), whose sum is σ = 41360998080. Its totient is φ = 17218474560.

The previous prime is 28423084559. The next prime is 28423084603. The reversal of 28423084569 is 96548032482.

It is a happy number.

It is not a de Polignac number, because 28423084569 - 2¹¹ = 28423082521 is a prime.

It is a super-2 number, since 2×28423084569² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28423084519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114922 + ... + 264675.

It is an arithmetic number, because the mean of its divisors is an integer number (2585062380).

Almost surely, 2^28423084569 is an apocalyptic number.

It is an amenable number.

28423084569 is a deficient number, since it is larger than the sum of its proper divisors (12937913511).

28423084569 is a wasteful number, since it uses less digits than its factorization.

28423084569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381880.

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 28423084569 in words is "twenty-eight billion, four hundred twenty-three million, eighty-four thousand, five hundred sixty-nine".