28422233 has 16 divisors (see below), whose sum is σ = 35376000. Its totient is φ = 22280832.

The previous prime is 28422221. The next prime is 28422259. The reversal of 28422233 is 33222482.

It is not a de Polignac number, because 28422233 - 2⁴ = 28422217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28422203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173 + ... + 7541.

It is an arithmetic number, because the mean of its divisors is an integer number (2211000).

Almost surely, 2^28422233 is an apocalyptic number.

It is an amenable number.

28422233 is a deficient number, since it is larger than the sum of its proper divisors (6953767).

28422233 is a wasteful number, since it uses less digits than its factorization.

28422233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7424.

The product of its digits is 4608, while the sum is 26.

The square root of 28422233 is about 5331.2506037514. The cubic root of 28422233 is about 305.1776551671.

The spelling of 28422233 in words is "twenty-eight million, four hundred twenty-two thousand, two hundred thirty-three".