28526130580 has 24 divisors (see below), whose sum is σ = 60454464840. Its totient is φ = 11305768320.

The previous prime is 28526130559. The next prime is 28526130593. The reversal of 28526130580 is 8503162582.

It can be written as a sum of positive squares in 4 ways, for example, as 5957678596 + 22568451984 = 77186^2 + 150228^2 .

It is a super-3 number, since 3×28526130580³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6540511 + ... + 6544870.

It is an arithmetic number, because the mean of its divisors is an integer number (2518936035).

Almost surely, 2^28526130580 is an apocalyptic number.

28526130580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28526130580 is an abundant number, since it is smaller than the sum of its proper divisors (31928334260).

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

28526130580 is a wasteful number, since it uses less digits than its factorization.

28526130580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13085499 (or 13085497 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 28526130580 in words is "twenty-eight billion, five hundred twenty-six million, one hundred thirty thousand, five hundred eighty".