28422234 has 12 divisors (see below), whose sum is σ = 61581546. Its totient is φ = 9474072.

The previous prime is 28422221. The next prime is 28422259. The reversal of 28422234 is 43222482.

28422234 is a `hidden beast` number, since 2 + 8 + 422 + 234 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26163225 + 2259009 = 5115^2 + 1503^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28422198 and 28422207.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 789489 + ... + 789524.

Almost surely, 2^28422234 is an apocalyptic number.

28422234 is an abundant number, since it is smaller than the sum of its proper divisors (33159312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28422234 is a wasteful number, since it uses less digits than its factorization.

28422234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579021 (or 1579018 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 28422234 is about 5331.2506975381. The cubic root of 28422234 is about 305.1776587462.

The spelling of 28422234 in words is "twenty-eight million, four hundred twenty-two thousand, two hundred thirty-four".