28067793 has 32 divisors (see below), whose sum is σ = 42287616. Its totient is φ = 16443648.

The previous prime is 28067783. The next prime is 28067801. The reversal of 28067793 is 39776082.

It is not a de Polignac number, because 28067793 - 2⁸ = 28067537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28067713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76296 + ... + 76662.

It is an arithmetic number, because the mean of its divisors is an integer number (1321488).

Almost surely, 2^28067793 is an apocalyptic number.

It is an amenable number.

28067793 is a deficient number, since it is larger than the sum of its proper divisors (14219823).

28067793 is a wasteful number, since it uses less digits than its factorization.

28067793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 28067793 is about 5297.9045857773. The cubic root of 28067793 is about 303.9037704714.

The spelling of 28067793 in words is "twenty-eight million, sixty-seven thousand, seven hundred ninety-three".