28063143856 has 60 divisors (see below), whose sum is σ = 63009772920. Its totient is φ = 12005601280.

The previous prime is 28063143853. The next prime is 28063143859. The reversal of 28063143856 is 65834136082.

It is an interprime number because it is at equal distance from previous prime (28063143853) and next prime (28063143859).

It is not an unprimeable number, because it can be changed into a prime (28063143853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225001 + ... + 326728.

It is an arithmetic number, because the mean of its divisors is an integer number (1050162882).

Almost surely, 2^28063143856 is an apocalyptic number.

It is an amenable number.

28063143856 is an abundant number, since it is smaller than the sum of its proper divisors (34946629064).

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

28063143856 is a wasteful number, since it uses less digits than its factorization.

28063143856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551782 (or 551759 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

It can be divided in two parts, 280 and 63143856, that added together give a palindrome (63144136).

The spelling of 28063143856 in words is "twenty-eight billion, sixty-three million, one hundred forty-three thousand, eight hundred fifty-six".