28168814 has 4 divisors (see below), whose sum is σ = 42253224. Its totient is φ = 14084406.

The previous prime is 28168807. The next prime is 28168823. The reversal of 28168814 is 41886182.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7042202 + ... + 7042205.

It is an arithmetic number, because the mean of its divisors is an integer number (10563306).

Almost surely, 2^28168814 is an apocalyptic number.

28168814 is a deficient number, since it is larger than the sum of its proper divisors (14084410).

28168814 is a wasteful number, since it uses less digits than its factorization.

28168814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14084409.

The product of its digits is 24576, while the sum is 38.

The square root of 28168814 is about 5307.4300749044. The cubic root of 28168814 is about 304.2679352382.

It can be divided in two parts, 28168 and 814, that added together give a palindrome (28982).

The spelling of 28168814 in words is "twenty-eight million, one hundred sixty-eight thousand, eight hundred fourteen".