28143086 has 8 divisors (see below), whose sum is σ = 42436224. Its totient is φ = 13997680.

The previous prime is 28143061. The next prime is 28143103. The reversal of 28143086 is 68034182.

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

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, 36455 + ... + 37218.

It is an arithmetic number, because the mean of its divisors is an integer number (5304528).

Almost surely, 2^28143086 is an apocalyptic number.

28143086 is a deficient number, since it is larger than the sum of its proper divisors (14293138).

28143086 is a wasteful number, since it uses less digits than its factorization.

28143086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73866.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28143086 is about 5305.0057492900. The cubic root of 28143086 is about 304.1752725990.

The spelling of 28143086 in words is "twenty-eight million, one hundred forty-three thousand, eighty-six".