28875571584 has 64 divisors (see below), whose sum is σ = 76804727040. Its totient is φ = 9612141056.

The previous prime is 28875571583. The next prime is 28875571591. The reversal of 28875571584 is 48517557882.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28875571583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234709 + ... + 335915.

It is an arithmetic number, because the mean of its divisors is an integer number (1200073860).

Almost surely, 2^28875571584 is an apocalyptic number.

28875571584 is a gapful number since it is divisible by the number (24) 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 28875571584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38402363520).

28875571584 is an abundant number, since it is smaller than the sum of its proper divisors (47929155456).

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

28875571584 is a wasteful number, since it uses less digits than its factorization.

28875571584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101967 (or 101955 counting only the distinct ones).

The product of its digits is 25088000, while the sum is 60.

The spelling of 28875571584 in words is "twenty-eight billion, eight hundred seventy-five million, five hundred seventy-one thousand, five hundred eighty-four".