28422227 has 8 divisors (see below), whose sum is σ = 29746464. Its totient is φ = 27105408.

The previous prime is 28422221. The next prime is 28422259. The reversal of 28422227 is 72222482.

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

It is not a de Polignac number, because 28422227 - 2⁸ = 28421971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28422227.

It is not an unprimeable number, because it can be changed into a prime (28422221) 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, 6923 + ... + 10235.

It is an arithmetic number, because the mean of its divisors is an integer number (3718308).

Almost surely, 2^28422227 is an apocalyptic number.

28422227 is a deficient number, since it is larger than the sum of its proper divisors (1324237).

28422227 is a wasteful number, since it uses less digits than its factorization.

28422227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3709.

The product of its digits is 7168, while the sum is 29.

The square root of 28422227 is about 5331.2500410317. The cubic root of 28422227 is about 305.1776336925.

The spelling of 28422227 in words is "twenty-eight million, four hundred twenty-two thousand, two hundred twenty-seven".