135530444 has 48 divisors (see below), whose sum is σ = 284390400. Its totient is φ = 55256256.

The previous prime is 135530441. The next prime is 135530489. The reversal of 135530444 is 444035531.

It is not an unprimeable number, because it can be changed into a prime (135530441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147017 + ... + 147935.

It is an arithmetic number, because the mean of its divisors is an integer number (5924800).

Almost surely, 2^135530444 is an apocalyptic number.

135530444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135530444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142195200).

135530444 is an abundant number, since it is smaller than the sum of its proper divisors (148859956).

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

135530444 is a wasteful number, since it uses less digits than its factorization.

135530444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 135530444 is about 11641.7543351507. The cubic root of 135530444 is about 513.6637922060.

Adding to 135530444 its reverse (444035531), we get a palindrome (579565975).

The spelling of 135530444 in words is "one hundred thirty-five million, five hundred thirty thousand, four hundred forty-four".