28605530580 has 48 divisors (see below), whose sum is σ = 87376895424. Its totient is φ = 6934673920.

The previous prime is 28605530567. The next prime is 28605530593. The reversal of 28605530580 is 8503550682.

It is an interprime number because it is at equal distance from previous prime (28605530567) and next prime (28605530593).

It is a super-3 number, since 3×28605530580³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21670197 + ... + 21671516.

It is an arithmetic number, because the mean of its divisors is an integer number (1820351988).

Almost surely, 2^28605530580 is an apocalyptic number.

28605530580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28605530580 is an abundant number, since it is smaller than the sum of its proper divisors (58771364844).

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

28605530580 is a wasteful number, since it uses less digits than its factorization.

28605530580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43341736 (or 43341734 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 28605530580 in words is "twenty-eight billion, six hundred five million, five hundred thirty thousand, five hundred eighty".