135440544 has 48 divisors (see below), whose sum is σ = 356384448. Its totient is φ = 45038592.

The previous prime is 135440521. The next prime is 135440549. The reversal of 135440544 is 445044531.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (135440549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45304 + ... + 48200.

It is an arithmetic number, because the mean of its divisors is an integer number (7424676).

Almost surely, 2^135440544 is an apocalyptic number.

It is an amenable number.

135440544 is an abundant number, since it is smaller than the sum of its proper divisors (220943904).

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

135440544 is a wasteful number, since it uses less digits than its factorization.

135440544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397 (or 3389 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 135440544 is about 11637.8925927334. The cubic root of 135440544 is about 513.5501926642.

The spelling of 135440544 in words is "one hundred thirty-five million, four hundred forty thousand, five hundred forty-four".