28520234124552 has 256 divisors, whose sum is σ = 84071595168000. Its totient is φ = 8927436570624.

The previous prime is 28520234124527. The next prime is 28520234124553. The reversal of 28520234124552 is 25542143202582.

28520234124552 is a `hidden beast` number, since 2 + 8 + 52 + 0 + 2 + 3 + 41 + 2 + 4 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28520234124498 and 28520234124507.

It is not an unprimeable number, because it can be changed into a prime (28520234124553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3258333808 + ... + 3258342560.

It is an arithmetic number, because the mean of its divisors is an integer number (328404668625).

Almost surely, 2^{28520234124552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28520234124552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42035797584000).

28520234124552 is an abundant number, since it is smaller than the sum of its proper divisors (55551361043448).

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

28520234124552 is a wasteful number, since it uses less digits than its factorization.

28520234124552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10677 (or 10667 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 45.

The spelling of 28520234124552 in words is "twenty-eight trillion, five hundred twenty billion, two hundred thirty-four million, one hundred twenty-four thousand, five hundred fifty-two".