28286071280 has 40 divisors (see below), whose sum is σ = 65979391632. Its totient is φ = 11277563904.

The previous prime is 28286071279. The next prime is 28286071313. The reversal of 28286071280 is 8217068282.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551297 + ... + 600416.

Almost surely, 2^28286071280 is an apocalyptic number.

28286071280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28286071280 is an abundant number, since it is smaller than the sum of its proper divisors (37693320352).

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

28286071280 is a wasteful number, since it uses less digits than its factorization.

28286071280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152033 (or 1152027 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 28286071280 in words is "twenty-eight billion, two hundred eighty-six million, seventy-one thousand, two hundred eighty".