135944560 has 20 divisors (see below), whose sum is σ = 316071288. Its totient is φ = 54377792.

The previous prime is 135944551. The next prime is 135944569. The reversal of 135944560 is 65449531.

It is an interprime number because it is at equal distance from previous prime (135944551) and next prime (135944569).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135944569) 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, 849574 + ... + 849733.

Almost surely, 2^135944560 is an apocalyptic number.

135944560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135944560 is an abundant number, since it is smaller than the sum of its proper divisors (180126728).

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

135944560 is a wasteful number, since it uses less digits than its factorization.

135944560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699320 (or 1699314 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 135944560 is about 11659.5265770099. The cubic root of 135944560 is about 514.1864302757.

The spelling of 135944560 in words is "one hundred thirty-five million, nine hundred forty-four thousand, five hundred sixty".