135811528 has 8 divisors (see below), whose sum is σ = 254646630. Its totient is φ = 67905760.

The previous prime is 135811519. The next prime is 135811541. The reversal of 135811528 is 825118531.

It can be written as a sum of positive squares in only one way, i.e., 118853604 + 16957924 = 10902^2 + 4118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×135811528² = 36889542275389568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135811493 and 135811502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8488213 + ... + 8488228.

Almost surely, 2^135811528 is an apocalyptic number.

It is an amenable number.

135811528 is a deficient number, since it is larger than the sum of its proper divisors (118835102).

135811528 is a wasteful number, since it uses less digits than its factorization.

135811528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16976447 (or 16976443 counting only the distinct ones).

The product of its digits is 9600, while the sum is 34.

The square root of 135811528 is about 11653.8203178185. The cubic root of 135811528 is about 514.0186521415.

The spelling of 135811528 in words is "one hundred thirty-five million, eight hundred eleven thousand, five hundred twenty-eight".