28681917022 has 8 divisors (see below), whose sum is σ = 46934046072. Its totient is φ = 13037235000.

The previous prime is 28681917007. The next prime is 28681917031. The reversal of 28681917022 is 22071918682.

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

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 651861729 + ... + 651861772.

It is an arithmetic number, because the mean of its divisors is an integer number (5866755759).

Almost surely, 2^28681917022 is an apocalyptic number.

28681917022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28681917022 is a deficient number, since it is larger than the sum of its proper divisors (18252129050).

28681917022 is a wasteful number, since it uses less digits than its factorization.

28681917022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303723514.

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 28681917022 in words is "twenty-eight billion, six hundred eighty-one million, nine hundred seventeen thousand, twenty-two".