28175007 has 16 divisors (see below), whose sum is σ = 43523840. Its totient is φ = 15878592.

The previous prime is 28174987. The next prime is 28175011. The reversal of 28175007 is 70057182.

It is a happy number.

It is not a de Polignac number, because 28175007 - 2⁶ = 28174943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28175047) 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 15 ways as a sum of consecutive naturals, for example, 7657 + ... + 10722.

It is an arithmetic number, because the mean of its divisors is an integer number (2720240).

Almost surely, 2^28175007 is an apocalyptic number.

28175007 is a deficient number, since it is larger than the sum of its proper divisors (15348833).

28175007 is a wasteful number, since it uses less digits than its factorization.

28175007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18462.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 28175007 is about 5308.0134702165. The cubic root of 28175007 is about 304.2902316834.

The spelling of 28175007 in words is "twenty-eight million, one hundred seventy-five thousand, seven".