28251170 has 8 divisors (see below), whose sum is σ = 50852124. Its totient is φ = 11300464.

The previous prime is 28251151. The next prime is 28251193. The reversal of 28251170 is 7115282.

It can be written as a sum of positive squares in 2 ways, for example, as 27678121 + 573049 = 5261^2 + 757^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1412549 + ... + 1412568.

Almost surely, 2^28251170 is an apocalyptic number.

28251170 is a deficient number, since it is larger than the sum of its proper divisors (22600954).

28251170 is a wasteful number, since it uses less digits than its factorization.

28251170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825124.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 28251170 is about 5315.1829695693. The cubic root of 28251170 is about 304.5641719326.

The spelling of 28251170 in words is "twenty-eight million, two hundred fifty-one thousand, one hundred seventy".