28065207572 has 24 divisors (see below), whose sum is σ = 52799053440. Its totient is φ = 13011192000.

The previous prime is 28065207563. The next prime is 28065207601. The reversal of 28065207572 is 27570256082.

It is a super-2 number, since 2×28065207572² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3924929 + ... + 3932072.

It is an arithmetic number, because the mean of its divisors is an integer number (2199960560).

Almost surely, 2^28065207572 is an apocalyptic number.

It is an amenable number.

28065207572 is a deficient number, since it is larger than the sum of its proper divisors (24733845868).

28065207572 is a wasteful number, since it uses less digits than its factorization.

28065207572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857071 (or 7857069 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 28065207572 in words is "twenty-eight billion, sixty-five million, two hundred seven thousand, five hundred seventy-two".