28854574120820 has 192 divisors, whose sum is σ = 73568415836160. Its totient is φ = 9280131268608.

The previous prime is 28854574120753. The next prime is 28854574120891. The reversal of 28854574120820 is 2802147545882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1161277637 + ... + 1161302483.

It is an arithmetic number, because the mean of its divisors is an integer number (383168832480).

Almost surely, 2^{28854574120820} is an apocalyptic number.

28854574120820 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 28854574120820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36784207918080).

28854574120820 is an abundant number, since it is smaller than the sum of its proper divisors (44713841715340).

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

28854574120820 is a wasteful number, since it uses less digits than its factorization.

28854574120820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26482 (or 26480 counting only the distinct ones).

The product of its (nonzero) digits is 11468800, while the sum is 56.

The spelling of 28854574120820 in words is "twenty-eight trillion, eight hundred fifty-four billion, five hundred seventy-four million, one hundred twenty thousand, eight hundred twenty".