22272828 has 12 divisors (see below), whose sum is σ = 51969960. Its totient is φ = 7424272.

The previous prime is 22272821. The next prime is 22272829. The reversal of 22272828 is 82827222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22272821) 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, 928023 + ... + 928046.

It is an arithmetic number, because the mean of its divisors is an integer number (4330830).

Almost surely, 2^22272828 is an apocalyptic number.

It is an amenable number.

22272828 is an abundant number, since it is smaller than the sum of its proper divisors (29697132).

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

22272828 is a wasteful number, since it uses less digits than its factorization.

22272828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856076 (or 1856074 counting only the distinct ones).

The product of its digits is 14336, while the sum is 33.

The square root of 22272828 is about 4719.4097088513. The cubic root of 22272828 is about 281.3574728032.

The spelling of 22272828 in words is "twenty-two million, two hundred seventy-two thousand, eight hundred twenty-eight".