28022171 has 8 divisors (see below), whose sum is σ = 30628224. Its totient is φ = 25522560.

The previous prime is 28022167. The next prime is 28022173. The reversal of 28022171 is 17122082.

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 28022171 - 2² = 28022167 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28022173) 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, 26060 + ... + 27113.

It is an arithmetic number, because the mean of its divisors is an integer number (3828528).

Almost surely, 2^28022171 is an apocalyptic number.

28022171 is a deficient number, since it is larger than the sum of its proper divisors (2606053).

28022171 is a wasteful number, since it uses less digits than its factorization.

28022171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53221.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 28022171 is about 5293.5971701670. The cubic root of 28022171 is about 303.7390239165.

The spelling of 28022171 in words is "twenty-eight million, twenty-two thousand, one hundred seventy-one".