28427617580 has 24 divisors (see below), whose sum is σ = 60538816800. Its totient is φ = 11210890880.

The previous prime is 28427617577. The next prime is 28427617609. The reversal of 28427617580 is 8571672482.

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, 10008305 + ... + 10011144.

It is an arithmetic number, because the mean of its divisors is an integer number (2522450700).

Almost surely, 2^28427617580 is an apocalyptic number.

28427617580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28427617580 is an abundant number, since it is smaller than the sum of its proper divisors (32111199220).

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

28427617580 is a wasteful number, since it uses less digits than its factorization.

28427617580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20019529 (or 20019527 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 28427617580 in words is "twenty-eight billion, four hundred twenty-seven million, six hundred seventeen thousand, five hundred eighty".