28339922087 has 4 divisors (see below), whose sum is σ = 28340265720. Its totient is φ = 28339578456.

The previous prime is 28339922081. The next prime is 28339922101. The reversal of 28339922087 is 78022993382.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28339922087 - 2³⁴ = 11160052903 is a prime.

It is a deceptive number, since it divides R_28339922086.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28339922081) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 34364 + ... + 240542.

It is an arithmetic number, because the mean of its divisors is an integer number (7085066430).

Almost surely, 2^28339922087 is an apocalyptic number.

28339922087 is the 137453-rd pentagonal number.

28339922087 is a deficient number, since it is larger than the sum of its proper divisors (343633).

28339922087 is a wasteful number, since it uses less digits than its factorization.

28339922087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343632.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 28339922087 in words is "twenty-eight billion, three hundred thirty-nine million, nine hundred twenty-two thousand, eighty-seven".