28543480280 has 64 divisors (see below), whose sum is σ = 73423368000. Its totient is φ = 9782889984.

The previous prime is 28543480271. The next prime is 28543480307. The reversal of 28543480280 is 8208434582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854126 + ... + 886914.

It is an arithmetic number, because the mean of its divisors is an integer number (1147240125).

Almost surely, 2^28543480280 is an apocalyptic number.

28543480280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28543480280 is an abundant number, since it is smaller than the sum of its proper divisors (44879887720).

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

28543480280 is a wasteful number, since it uses less digits than its factorization.

28543480280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35916 (or 35912 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 44.

The spelling of 28543480280 in words is "twenty-eight billion, five hundred forty-three million, four hundred eighty thousand, two hundred eighty".