28555736260 has 24 divisors (see below), whose sum is σ = 59982473880. Its totient is φ = 11419355904.

The previous prime is 28555736249. The next prime is 28555736317. The reversal of 28555736260 is 6263755582.

It can be written as a sum of positive squares in 4 ways, for example, as 538332804 + 28017403456 = 23202^2 + 167384^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 103119 + ... + 260278.

It is an arithmetic number, because the mean of its divisors is an integer number (2499269745).

Almost surely, 2^28555736260 is an apocalyptic number.

28555736260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28555736260 is an abundant number, since it is smaller than the sum of its proper divisors (31426737620).

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

28555736260 is a wasteful number, since it uses less digits than its factorization.

28555736260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367335 (or 367333 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 28555736260 in words is "twenty-eight billion, five hundred fifty-five million, seven hundred thirty-six thousand, two hundred sixty".