28514066188872 has 128 divisors (see below), whose sum is σ = 78629926003200. Its totient is φ = 8544876748800.

The previous prime is 28514066188871. The next prime is 28514066188961. The reversal of 28514066188872 is 27888166041582.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (28514066188871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15245704 + ... + 17013512.

It is an arithmetic number, because the mean of its divisors is an integer number (614296296900).

Almost surely, 2^{28514066188872} is an apocalyptic number.

28514066188872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28514066188872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39314963001600).

28514066188872 is an abundant number, since it is smaller than the sum of its proper divisors (50115859814328).

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

28514066188872 is a wasteful number, since it uses less digits than its factorization.

28514066188872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768507 (or 1768503 counting only the distinct ones).

The product of its (nonzero) digits is 82575360, while the sum is 66.

The spelling of 28514066188872 in words is "twenty-eight trillion, five hundred fourteen billion, sixty-six million, one hundred eighty-eight thousand, eight hundred seventy-two".