28467791 has 12 divisors (see below), whose sum is σ = 31521000. Its totient is φ = 25689840.

The previous prime is 28467779. The next prime is 28467797. The reversal of 28467791 is 19776482.

It is not a de Polignac number, because 28467791 - 2¹⁸ = 28205647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28467797) 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 11 ways as a sum of consecutive naturals, for example, 17240 + ... + 18818.

It is an arithmetic number, because the mean of its divisors is an integer number (2626750).

Almost surely, 2^28467791 is an apocalyptic number.

28467791 is a deficient number, since it is larger than the sum of its proper divisors (3053209).

28467791 is a wasteful number, since it uses less digits than its factorization.

28467791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750 (or 1739 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 28467791 is about 5335.5216239839. The cubic root of 28467791 is about 305.3406245544.

The spelling of 28467791 in words is "twenty-eight million, four hundred sixty-seven thousand, seven hundred ninety-one".