22144356 has 36 divisors (see below), whose sum is σ = 60283132. Its totient is φ = 6813504.

The previous prime is 22144333. The next prime is 22144361. The reversal of 22144356 is 65344122.

22144356 is a `hidden beast` number, since 221 + 4 + 435 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11451456 + 10692900 = 3384^2 + 3270^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23191 + ... + 24126.

Almost surely, 2^22144356 is an apocalyptic number.

22144356 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22144356 is an abundant number, since it is smaller than the sum of its proper divisors (38138776).

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

22144356 is a wasteful number, since it uses less digits than its factorization.

22144356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47340 (or 47335 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 22144356 is about 4705.7790003357. The cubic root of 22144356 is about 280.8154629028.

Adding to 22144356 its reverse (65344122), we get a palindrome (87488478).

It can be divided in two parts, 22144 and 356, that added together give a square (22500 = 150²).

The spelling of 22144356 in words is "twenty-two million, one hundred forty-four thousand, three hundred fifty-six".