28168464 has 40 divisors (see below), whose sum is σ = 72986400. Its totient is φ = 9361408.

The previous prime is 28168453. The next prime is 28168513. The reversal of 28168464 is 46486182.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20899 + ... + 22205.

It is an arithmetic number, because the mean of its divisors is an integer number (1824660).

Almost surely, 2^28168464 is an apocalyptic number.

28168464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28168464 is an abundant number, since it is smaller than the sum of its proper divisors (44817936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28168464 is a wasteful number, since it uses less digits than its factorization.

28168464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1761 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 28168464 is about 5307.3971021585. The cubic root of 28168464 is about 304.2666750477.

The spelling of 28168464 in words is "twenty-eight million, one hundred sixty-eight thousand, four hundred sixty-four".