28105174 has 4 divisors (see below), whose sum is σ = 42157764. Its totient is φ = 14052586.

The previous prime is 28105157. The next prime is 28105183. The reversal of 28105174 is 47150182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47150182 = 2 ⋅23575091.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7026292 + ... + 7026295.

It is an arithmetic number, because the mean of its divisors is an integer number (10539441).

Almost surely, 2^28105174 is an apocalyptic number.

28105174 is a deficient number, since it is larger than the sum of its proper divisors (14052590).

28105174 is a wasteful number, since it uses less digits than its factorization.

28105174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14052589.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 28105174 is about 5301.4313161636. The cubic root of 28105174 is about 304.0386247668.

The spelling of 28105174 in words is "twenty-eight million, one hundred five thousand, one hundred seventy-four".