28567565004 has 48 divisors (see below), whose sum is σ = 74264633856. Its totient is φ = 8472648000.

The previous prime is 28567564979. The next prime is 28567565009. The reversal of 28567565004 is 40056576582.

It is a happy number.

It is a super-2 number, since 2×28567565004² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28567565009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2296147 + ... + 2308554.

It is an arithmetic number, because the mean of its divisors is an integer number (1547179872).

Almost surely, 2^28567565004 is an apocalyptic number.

It is an amenable number.

28567565004 is an abundant number, since it is smaller than the sum of its proper divisors (45697068852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28567565004 is a wasteful number, since it uses less digits than its factorization.

28567565004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604766 (or 4604764 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 28567565004 in words is "twenty-eight billion, five hundred sixty-seven million, five hundred sixty-five thousand, four".