28081471322 has 4 divisors (see below), whose sum is σ = 42122206986. Its totient is φ = 14040735660.

The previous prime is 28081471309. The next prime is 28081471337. The reversal of 28081471322 is 22317418082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23323092961 + 4758378361 = 152719^2 + 68981^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7020367829 + ... + 7020367832.

Almost surely, 2^28081471322 is an apocalyptic number.

28081471322 is a deficient number, since it is larger than the sum of its proper divisors (14040735664).

28081471322 is a wasteful number, since it uses less digits than its factorization.

28081471322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14040735663.

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 28081471322 in words is "twenty-eight billion, eighty-one million, four hundred seventy-one thousand, three hundred twenty-two".