28168030 has 32 divisors (see below), whose sum is σ = 55686528. Its totient is φ = 10173600.

The previous prime is 28168009. The next prime is 28168037. The reversal of 28168030 is 3086182.

It is a self number, because there is not a number n which added to its sum of digits gives 28168030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28168037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17145 + ... + 18715.

It is an arithmetic number, because the mean of its divisors is an integer number (1740204).

Almost surely, 2^28168030 is an apocalyptic number.

28168030 is a deficient number, since it is larger than the sum of its proper divisors (27518498).

28168030 is a wasteful number, since it uses less digits than its factorization.

28168030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28168030 is about 5307.3562156690. The cubic root of 28168030 is about 304.2651123969.

The spelling of 28168030 in words is "twenty-eight million, one hundred sixty-eight thousand, thirty".