135228560 has 20 divisors (see below), whose sum is σ = 314406588. Its totient is φ = 54091392.

The previous prime is 135228553. The next prime is 135228563. The reversal of 135228560 is 65822531.

It can be written as a sum of positive squares in 2 ways, for example, as 69488896 + 65739664 = 8336^2 + 8108^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (135228563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845099 + ... + 845258.

Almost surely, 2^135228560 is an apocalyptic number.

135228560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135228560 is an abundant number, since it is smaller than the sum of its proper divisors (179178028).

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

135228560 is a wasteful number, since it uses less digits than its factorization.

135228560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690370 (or 1690364 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 135228560 is about 11628.7815354834. The cubic root of 135228560 is about 513.2821260365.

The spelling of 135228560 in words is "one hundred thirty-five million, two hundred twenty-eight thousand, five hundred sixty".