28260971052 has 12 divisors (see below), whose sum is σ = 65942265816. Its totient is φ = 9420323680.

The previous prime is 28260971029. The next prime is 28260971077. The reversal of 28260971052 is 25017906282.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28260970995 and 28260971013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177540449 + ... + 1177540472.

It is an arithmetic number, because the mean of its divisors is an integer number (5495188818).

Almost surely, 2^28260971052 is an apocalyptic number.

It is an amenable number.

28260971052 is an abundant number, since it is smaller than the sum of its proper divisors (37681294764).

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

28260971052 is a wasteful number, since it uses less digits than its factorization.

28260971052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355080928 (or 2355080926 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 28260971052 in words is "twenty-eight billion, two hundred sixty million, nine hundred seventy-one thousand, fifty-two".