28143914 has 8 divisors (see below), whose sum is σ = 42402528. Its totient is φ = 14009740.

The previous prime is 28143911. The next prime is 28143943. The reversal of 28143914 is 41934182.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (28143911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30542 + ... + 31449.

It is an arithmetic number, because the mean of its divisors is an integer number (5300316).

Almost surely, 2^28143914 is an apocalyptic number.

28143914 is a deficient number, since it is larger than the sum of its proper divisors (14258614).

28143914 is a wasteful number, since it uses less digits than its factorization.

28143914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62220.

The product of its digits is 6912, while the sum is 32.

The square root of 28143914 is about 5305.0837882167. The cubic root of 28143914 is about 304.1782556248.

The spelling of 28143914 in words is "twenty-eight million, one hundred forty-three thousand, nine hundred fourteen".