28168463 has 8 divisors (see below), whose sum is σ = 28842240. Its totient is φ = 27497880.

The previous prime is 28168453. The next prime is 28168513. The reversal of 28168463 is 36486182.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28168463 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 (28168453) 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, 34328 + ... + 35138.

It is an arithmetic number, because the mean of its divisors is an integer number (3605280).

Almost surely, 2^28168463 is an apocalyptic number.

28168463 is a deficient number, since it is larger than the sum of its proper divisors (673777).

28168463 is an equidigital number, since it uses as much as digits as its factorization.

28168463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597.

The product of its digits is 55296, while the sum is 38.

The square root of 28168463 is about 5307.3970079503. The cubic root of 28168463 is about 304.2666714471.

The spelling of 28168463 in words is "twenty-eight million, one hundred sixty-eight thousand, four hundred sixty-three".