22028271 has 4 divisors (see below), whose sum is σ = 29371032. Its totient is φ = 14685512.

The previous prime is 22028269. The next prime is 22028287. The reversal of 22028271 is 17282022.

It is a happy number.

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 22028271 - 2¹ = 22028269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22028291) 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, 3671376 + ... + 3671381.

It is an arithmetic number, because the mean of its divisors is an integer number (7342758).

Almost surely, 2^22028271 is an apocalyptic number.

22028271 is a deficient number, since it is larger than the sum of its proper divisors (7342761).

22028271 is an equidigital number, since it uses as much as digits as its factorization.

22028271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342760.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 22028271 is about 4693.4284909861. The cubic root of 22028271 is about 280.3239066199.

The spelling of 22028271 in words is "twenty-two million, twenty-eight thousand, two hundred seventy-one".