28025280052 has 96 divisors (see below), whose sum is σ = 63240339456. Its totient is φ = 10546329600.

The previous prime is 28025280013. The next prime is 28025280053. The reversal of 28025280052 is 25008252082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025280053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5506653 + ... + 5511739.

It is an arithmetic number, because the mean of its divisors is an integer number (658753536).

Almost surely, 2^28025280052 is an apocalyptic number.

28025280052 is a gapful number since it is divisible by the number (22) 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 28025280052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31620169728).

28025280052 is an abundant number, since it is smaller than the sum of its proper divisors (35215059404).

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

28025280052 is a wasteful number, since it uses less digits than its factorization.

28025280052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717 (or 5715 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The spelling of 28025280052 in words is "twenty-eight billion, twenty-five million, two hundred eighty thousand, fifty-two".