28524489280 has 112 divisors (see below), whose sum is σ = 78943443840. Its totient is φ = 9614020608.

The previous prime is 28524489277. The next prime is 28524489281. The reversal of 28524489280 is 8298442582.

It is a tau number, because it is divible by the number of its divisors (112).

It is not an unprimeable number, because it can be changed into a prime (28524489281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24244 + ... + 240076.

Almost surely, 2^28524489280 is an apocalyptic number.

28524489280 is a gapful number since it is divisible by the number (20) 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 28524489280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39471721920).

28524489280 is an abundant number, since it is smaller than the sum of its proper divisors (50418954560).

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

28524489280 is a wasteful number, since it uses less digits than its factorization.

28524489280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215916 (or 215906 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 28524489280 in words is "twenty-eight billion, five hundred twenty-four million, four hundred eighty-nine thousand, two hundred eighty".