28089250971 has 8 divisors (see below), whose sum is σ = 37535749200. Its totient is φ = 18684460032.

The previous prime is 28089250967. The next prime is 28089250993. The reversal of 28089250971 is 17905298082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28089250971 - 2² = 28089250967 is a prime.

It is a super-2 number, since 2×28089250971² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28089250901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10425250 + ... + 10427943.

It is an arithmetic number, because the mean of its divisors is an integer number (4691968650).

Almost surely, 2^28089250971 is an apocalyptic number.

28089250971 is a deficient number, since it is larger than the sum of its proper divisors (9446498229).

28089250971 is a wasteful number, since it uses less digits than its factorization.

28089250971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20853645.

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 28089250971 in words is "twenty-eight billion, eighty-nine million, two hundred fifty thousand, nine hundred seventy-one".