28003122252 has 192 divisors, whose sum is σ = 84184826880. Its totient is φ = 7884864000.

The previous prime is 28003122239. The next prime is 28003122271. The reversal of 28003122252 is 25222130082.

28003122252 is a `hidden beast` number, since 280 + 0 + 312 + 22 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15547752 + ... + 15549552.

It is an arithmetic number, because the mean of its divisors is an integer number (438462640).

Almost surely, 2^28003122252 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 28003122252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42092413440).

28003122252 is an abundant number, since it is smaller than the sum of its proper divisors (56181704628).

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

28003122252 is a wasteful number, since it uses less digits than its factorization.

28003122252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The spelling of 28003122252 in words is "twenty-eight billion, three million, one hundred twenty-two thousand, two hundred fifty-two".