28653171 has 4 divisors (see below), whose sum is σ = 38204232. Its totient is φ = 19102112.

The previous prime is 28653169. The next prime is 28653217. The reversal of 28653171 is 17135682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28653171 - 2¹ = 28653169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28653151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4775526 + ... + 4775531.

It is an arithmetic number, because the mean of its divisors is an integer number (9551058).

Almost surely, 2^28653171 is an apocalyptic number.

28653171 is a deficient number, since it is larger than the sum of its proper divisors (9551061).

28653171 is an equidigital number, since it uses as much as digits as its factorization.

28653171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9551060.

The product of its digits is 10080, while the sum is 33.

The square root of 28653171 is about 5352.8656811095. The cubic root of 28653171 is about 306.0019757231.

The spelling of 28653171 in words is "twenty-eight million, six hundred fifty-three thousand, one hundred seventy-one".