28247858 has 8 divisors (see below), whose sum is σ = 42677040. Its totient is φ = 14022180.

The previous prime is 28247833. The next prime is 28247881. The reversal of 28247858 is 85874282.

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

It is an unprimeable number.

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, 50528 + ... + 51083.

It is an arithmetic number, because the mean of its divisors is an integer number (5334630).

Almost surely, 2^28247858 is an apocalyptic number.

28247858 is a deficient number, since it is larger than the sum of its proper divisors (14429182).

28247858 is a wasteful number, since it uses less digits than its factorization.

28247858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101752.

The product of its digits is 286720, while the sum is 44.

The square root of 28247858 is about 5314.8714001375. The cubic root of 28247858 is about 304.5522697004.

The spelling of 28247858 in words is "twenty-eight million, two hundred forty-seven thousand, eight hundred fifty-eight".