135404448 has 24 divisors (see below), whose sum is σ = 355436928. Its totient is φ = 45134784.

The previous prime is 135404441. The next prime is 135404449. The reversal of 135404448 is 844404531.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (135404441) 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, 705136 + ... + 705327.

It is an arithmetic number, because the mean of its divisors is an integer number (14809872).

Almost surely, 2^135404448 is an apocalyptic number.

It is an amenable number.

135404448 is an abundant number, since it is smaller than the sum of its proper divisors (220032480).

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

135404448 is a wasteful number, since it uses less digits than its factorization.

135404448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410476 (or 1410468 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 135404448 is about 11636.3416931611. The cubic root of 135404448 is about 513.5045668513.

Adding to 135404448 its reverse (844404531), we get a palindrome (979808979).

The spelling of 135404448 in words is "one hundred thirty-five million, four hundred four thousand, four hundred forty-eight".