28168142 has 8 divisors (see below), whose sum is σ = 42276432. Its totient is φ = 14076000.

The previous prime is 28168103. The next prime is 28168163. The reversal of 28168142 is 24186182.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 28168099 and 28168108.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2342 + ... + 7862.

It is an arithmetic number, because the mean of its divisors is an integer number (5284554).

Almost surely, 2^28168142 is an apocalyptic number.

28168142 is a deficient number, since it is larger than the sum of its proper divisors (14108290).

28168142 is a wasteful number, since it uses less digits than its factorization.

28168142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8074.

The product of its digits is 6144, while the sum is 32.

The square root of 28168142 is about 5307.3667670512. The cubic root of 28168142 is about 304.2655156632.

The spelling of 28168142 in words is "twenty-eight million, one hundred sixty-eight thousand, one hundred forty-two".