135728747 has 8 divisors (see below), whose sum is σ = 169220352. Its totient is φ = 105762600.

The previous prime is 135728743. The next prime is 135728771. The reversal of 135728747 is 747827531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135728747 - 2² = 135728743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135728698 and 135728707.

It is not an unprimeable number, because it can be changed into a prime (135728741) 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 7 ways as a sum of consecutive naturals, for example, 881279 + ... + 881432.

It is an arithmetic number, because the mean of its divisors is an integer number (21152544).

Almost surely, 2^135728747 is an apocalyptic number.

135728747 is a deficient number, since it is larger than the sum of its proper divisors (33491605).

135728747 is a wasteful number, since it uses less digits than its factorization.

135728747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762729.

The product of its digits is 329280, while the sum is 44.

The square root of 135728747 is about 11650.2681085029. The cubic root of 135728747 is about 513.9141945721.

The spelling of 135728747 in words is "one hundred thirty-five million, seven hundred twenty-eight thousand, seven hundred forty-seven".