28161171250 has 40 divisors (see below), whose sum is σ = 55080368640. Its totient is φ = 10774698000.

The previous prime is 28161171239. The next prime is 28161171257. The reversal of 28161171250 is 5217116182.

It is not an unprimeable number, because it can be changed into a prime (28161171257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 461010 + ... + 518509.

It is an arithmetic number, because the mean of its divisors is an integer number (1377009216).

Almost surely, 2^28161171250 is an apocalyptic number.

28161171250 is a deficient number, since it is larger than the sum of its proper divisors (26919197390).

28161171250 is an equidigital number, since it uses as much as digits as its factorization.

28161171250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979564 (or 979549 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 34.

The spelling of 28161171250 in words is "twenty-eight billion, one hundred sixty-one million, one hundred seventy-one thousand, two hundred fifty".