28175738 has 8 divisors (see below), whose sum is σ = 42353280. Its totient is φ = 14057980.

The previous prime is 28175731. The next prime is 28175779. The reversal of 28175738 is 83757182.

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

It is a junction number, because it is equal to n+sod(n) for n = 28175695 and 28175704.

It is not an unprimeable number, because it can be changed into a prime (28175731) by changing a digit.

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, 13748 + ... + 15663.

It is an arithmetic number, because the mean of its divisors is an integer number (5294160).

Almost surely, 2^28175738 is an apocalyptic number.

28175738 is a deficient number, since it is larger than the sum of its proper divisors (14177542).

28175738 is a wasteful number, since it uses less digits than its factorization.

28175738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29892.

The product of its digits is 94080, while the sum is 41.

The square root of 28175738 is about 5308.0823279222. The cubic root of 28175738 is about 304.2928632620.

The spelling of 28175738 in words is "twenty-eight million, one hundred seventy-five thousand, seven hundred thirty-eight".