28227171 has 8 divisors (see below), whose sum is σ = 43012864. Its totient is φ = 16129800.

The previous prime is 28227169. The next prime is 28227181. The reversal of 28227171 is 17172282.

It is a happy number.

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

It is not a de Polignac number, because 28227171 - 2¹ = 28227169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28227181) 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, 672055 + ... + 672096.

It is an arithmetic number, because the mean of its divisors is an integer number (5376608).

Almost surely, 2^28227171 is an apocalyptic number.

28227171 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28227171 is a deficient number, since it is larger than the sum of its proper divisors (14785693).

28227171 is a wasteful number, since it uses less digits than its factorization.

28227171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344161.

The product of its digits is 3136, while the sum is 30.

The square root of 28227171 is about 5312.9249006550. The cubic root of 28227171 is about 304.4779064052.

The spelling of 28227171 in words is "twenty-eight million, two hundred twenty-seven thousand, one hundred seventy-one".