28545274824 has 64 divisors (see below), whose sum is σ = 78045180480. Its totient is φ = 8628480000.

The previous prime is 28545274799. The next prime is 28545274829. The reversal of 28545274824 is 42847254582.

It is not an unprimeable number, because it can be changed into a prime (28545274829) 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, 28957 + ... + 240684.

It is an arithmetic number, because the mean of its divisors is an integer number (1219455945).

Almost surely, 2^28545274824 is an apocalyptic number.

28545274824 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 28545274824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39022590240).

28545274824 is an abundant number, since it is smaller than the sum of its proper divisors (49499905656).

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

28545274824 is a wasteful number, since it uses less digits than its factorization.

28545274824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270062 (or 270058 counting only the distinct ones).

The product of its digits is 5734400, while the sum is 51.

The spelling of 28545274824 in words is "twenty-eight billion, five hundred forty-five million, two hundred seventy-four thousand, eight hundred twenty-four".