135444232 has 96 divisors (see below), whose sum is σ = 326514240. Its totient is φ = 52080000.

The previous prime is 135444227. The next prime is 135444233. The reversal of 135444232 is 232444531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 135444232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135444233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435357 + ... + 435667.

It is an arithmetic number, because the mean of its divisors is an integer number (3401190).

Almost surely, 2^135444232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135444232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163257120).

135444232 is an abundant number, since it is smaller than the sum of its proper divisors (191070008).

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

135444232 is a wasteful number, since it uses less digits than its factorization.

135444232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 432 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 135444232 is about 11638.0510395856. The cubic root of 135444232 is about 513.5548538876.

Adding to 135444232 its reverse (232444531), we get a palindrome (367888763).

The spelling of 135444232 in words is "one hundred thirty-five million, four hundred forty-four thousand, two hundred thirty-two".