135040446 has 48 divisors (see below), whose sum is σ = 305760000. Its totient is φ = 44667288.

The previous prime is 135040441. The next prime is 135040453. The reversal of 135040446 is 644040531.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135040441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66555 + ... + 68553.

It is an arithmetic number, because the mean of its divisors is an integer number (6370000).

Almost surely, 2^135040446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135040446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152880000).

135040446 is an abundant number, since it is smaller than the sum of its proper divisors (170719554).

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

135040446 is a wasteful number, since it uses less digits than its factorization.

135040446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 135040446 is about 11620.6904269927. The cubic root of 135040446 is about 513.0440097670.

Adding to 135040446 its reverse (644040531), we get a palindrome (779080977).

The spelling of 135040446 in words is "one hundred thirty-five million, forty thousand, four hundred forty-six".