28532364449280 has 80 divisors (see below), whose sum is σ = 91214402623344. Its totient is φ = 7608630517760.

The previous prime is 28532364449257. The next prime is 28532364449297. The reversal of 28532364449280 is 8294446323582.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 1857568131 + ... + 1857583490.

Almost surely, 2^{28532364449280} is an apocalyptic number.

28532364449280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28532364449280 is an abundant number, since it is smaller than the sum of its proper divisors (62682038174064).

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

28532364449280 is an equidigital number, since it uses as much as digits as its factorization.

28532364449280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715151647 (or 3715151631 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 60.

The spelling of 28532364449280 in words is "twenty-eight trillion, five hundred thirty-two billion, three hundred sixty-four million, four hundred forty-nine thousand, two hundred eighty".