28618871746 has 4 divisors (see below), whose sum is σ = 42928307622. Its totient is φ = 14309435872.

The previous prime is 28618871681. The next prime is 28618871753. The reversal of 28618871746 is 64717881682.

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., 16017686721 + 12601185025 = 126561^2 + 112255^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7154717935 + ... + 7154717938.

Almost surely, 2^28618871746 is an apocalyptic number.

28618871746 is a deficient number, since it is larger than the sum of its proper divisors (14309435876).

28618871746 is a wasteful number, since it uses less digits than its factorization.

28618871746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14309435875.

The product of its digits is 7225344, while the sum is 58.

The spelling of 28618871746 in words is "twenty-eight billion, six hundred eighteen million, eight hundred seventy-one thousand, seven hundred forty-six".