22328144 has 20 divisors (see below), whose sum is σ = 44753460. Its totient is φ = 10778880.

The previous prime is 22328143. The next prime is 22328197. The reversal of 22328144 is 44182322.

It can be written as a sum of positive squares in 2 ways, for example, as 13987600 + 8340544 = 3740^2 + 2888^2 .

It is a super-3 number, since 3×22328144³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22328143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23597 + ... + 24524.

It is an arithmetic number, because the mean of its divisors is an integer number (2237673).

Almost surely, 2^22328144 is an apocalyptic number.

It is an amenable number.

22328144 is an abundant number, since it is smaller than the sum of its proper divisors (22425316).

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

22328144 is a wasteful number, since it uses less digits than its factorization.

22328144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48158 (or 48152 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 22328144 is about 4725.2665533280. The cubic root of 22328144 is about 281.5902033653.

The spelling of 22328144 in words is "twenty-two million, three hundred twenty-eight thousand, one hundred forty-four".