28068133767 has 8 divisors (see below), whose sum is σ = 37426573296. Its totient is φ = 18710891712.

The previous prime is 28068133741. The next prime is 28068133777. The reversal of 28068133767 is 76733186082.

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

It is not a de Polignac number, because 28068133767 - 2⁶ = 28068133703 is a prime.

It is a super-2 number, since 2×28068133767² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28068133727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243168 + ... + 339509.

It is an arithmetic number, because the mean of its divisors is an integer number (4678321662).

Almost surely, 2^28068133767 is an apocalyptic number.

28068133767 is a deficient number, since it is larger than the sum of its proper divisors (9358439529).

28068133767 is a wasteful number, since it uses less digits than its factorization.

28068133767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598737.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 28068133767 in words is "twenty-eight billion, sixty-eight million, one hundred thirty-three thousand, seven hundred sixty-seven".