28452171 has 8 divisors (see below), whose sum is σ = 41385024. Its totient is φ = 17243720.

The previous prime is 28452163. The next prime is 28452187. The reversal of 28452171 is 17125482.

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

It is a cyclic number.

It is not a de Polignac number, because 28452171 - 2³ = 28452163 is a prime.

It is a super-2 number, since 2×28452171² = 1619052069226482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28452871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431061 + ... + 431126.

It is an arithmetic number, because the mean of its divisors is an integer number (5173128).

Almost surely, 2^28452171 is an apocalyptic number.

28452171 is a deficient number, since it is larger than the sum of its proper divisors (12932853).

28452171 is a wasteful number, since it uses less digits than its factorization.

28452171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862201.

The product of its digits is 4480, while the sum is 30.

The square root of 28452171 is about 5334.0576487323. The cubic root of 28452171 is about 305.2847685271.

The spelling of 28452171 in words is "twenty-eight million, four hundred fifty-two thousand, one hundred seventy-one".