28298136386 has 24 divisors (see below), whose sum is σ = 48667288644. Its totient is φ = 12292400640.

The previous prime is 28298136367. The next prime is 28298136397. The reversal of 28298136386 is 68363189282.

It can be written as a sum of positive squares in 6 ways, for example, as 12483816361 + 15814320025 = 111731^2 + 125755^2 .

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 in 11 ways as a sum of consecutive naturals, for example, 2456675 + ... + 2468166.

Almost surely, 2^28298136386 is an apocalyptic number.

28298136386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28298136386 is a deficient number, since it is larger than the sum of its proper divisors (20369152258).

28298136386 is a wasteful number, since it uses less digits than its factorization.

28298136386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924886 (or 4924873 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 56.

The spelling of 28298136386 in words is "twenty-eight billion, two hundred ninety-eight million, one hundred thirty-six thousand, three hundred eighty-six".