135444432 has 20 divisors (see below), whose sum is σ = 349898240. Its totient is φ = 45148128.

The previous prime is 135444431. The next prime is 135444451. The reversal of 135444432 is 234444531.

It is a self number, because there is not a number n which added to its sum of digits gives 135444432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135444431) 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, 1410832 + ... + 1410927.

It is an arithmetic number, because the mean of its divisors is an integer number (17494912).

Almost surely, 2^135444432 is an apocalyptic number.

135444432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135444432 is an abundant number, since it is smaller than the sum of its proper divisors (214453808).

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

135444432 is a wasteful number, since it uses less digits than its factorization.

135444432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821770 (or 2821764 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

The square root of 135444432 is about 11638.0596320864. The cubic root of 135444432 is about 513.5551066631. Note that the first 3 decimals are identical.

Adding to 135444432 its reverse (234444531), we get a palindrome (369888963).

Subtracting 135444432 from its reverse (234444531), we obtain a palindrome (99000099).

It can be divided in two parts, 13 and 5444432, that added together give a palindrome (5444445).

The spelling of 135444432 in words is "one hundred thirty-five million, four hundred forty-four thousand, four hundred thirty-two".