28249174 has 4 divisors (see below), whose sum is σ = 42373764. Its totient is φ = 14124586.

The previous prime is 28249163. The next prime is 28249187. The reversal of 28249174 is 47194282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47194282 = 2 ⋅23597141.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 7062292 + ... + 7062295.

It is an arithmetic number, because the mean of its divisors is an integer number (10593441).

Almost surely, 2^28249174 is an apocalyptic number.

28249174 is a deficient number, since it is larger than the sum of its proper divisors (14124590).

28249174 is a wasteful number, since it uses less digits than its factorization.

28249174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14124589.

The product of its digits is 32256, while the sum is 37.

The square root of 28249174 is about 5314.9952022556. The cubic root of 28249174 is about 304.5569990804.

The spelling of 28249174 in words is "twenty-eight million, two hundred forty-nine thousand, one hundred seventy-four".