135223844 has 12 divisors (see below), whose sum is σ = 270447744. Its totient is φ = 57953064.

The previous prime is 135223819. The next prime is 135223861. The reversal of 135223844 is 448322531.

135223844 is an admirable number.

It is a super-2 number, since 2×135223844² = 36570975972272672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135223844.

It is an unprimeable number.

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, 2414684 + ... + 2414739.

It is an arithmetic number, because the mean of its divisors is an integer number (22537312).

Almost surely, 2^135223844 is an apocalyptic number.

135223844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

135223844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

135223844 is a wasteful number, since it uses less digits than its factorization.

135223844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4829434 (or 4829432 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 135223844 is about 11628.5787609664. The cubic root of 135223844 is about 513.2761591839.

The spelling of 135223844 in words is "one hundred thirty-five million, two hundred twenty-three thousand, eight hundred forty-four".