28888244806860 has 72 divisors (see below), whose sum is σ = 88267294061856. Its totient is φ = 7647301781760.

The previous prime is 28888244806829. The next prime is 28888244806877. The reversal of 28888244806860 is 6860844288882.

It is a happy number.

28888244806860 is a `hidden beast` number, since 2 + 8 + 8 + 8 + 8 + 24 + 480 + 68 + 60 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 585706176 + ... + 585755495.

It is an arithmetic number, because the mean of its divisors is an integer number (1225934639748).

Almost surely, 2^{28888244806860} is an apocalyptic number.

28888244806860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28888244806860 is an abundant number, since it is smaller than the sum of its proper divisors (59379049254996).

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

28888244806860 is a wasteful number, since it uses less digits than its factorization.

28888244806860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171461823 (or 1171461818 counting only the distinct ones).

The product of its (nonzero) digits is 603979776, while the sum is 72.

The spelling of 28888244806860 in words is "twenty-eight trillion, eight hundred eighty-eight billion, two hundred forty-four million, eight hundred six thousand, eight hundred sixty".