28266463 has 4 divisors (see below), whose sum is σ = 28278328. Its totient is φ = 28254600.

The previous prime is 28266457. The next prime is 28266467. The reversal of 28266463 is 36466282.

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 a de Polignac number, because none of the positive numbers 2^k-28266463 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 (28266467) by changing a digit.

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, 981 + ... + 7582.

It is an arithmetic number, because the mean of its divisors is an integer number (7069582).

Almost surely, 2^28266463 is an apocalyptic number.

28266463 is a deficient number, since it is larger than the sum of its proper divisors (11865).

28266463 is an equidigital number, since it uses as much as digits as its factorization.

28266463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11864.

The product of its digits is 82944, while the sum is 37.

The square root of 28266463 is about 5316.6213895669. The cubic root of 28266463 is about 304.6191178540.

The spelling of 28266463 in words is "twenty-eight million, two hundred sixty-six thousand, four hundred sixty-three".