135173008 has 10 divisors (see below), whose sum is σ = 261897734. Its totient is φ = 67586496.

The previous prime is 135172997. The next prime is 135173009. The reversal of 135173008 is 800371531.

It can be written as a sum of positive squares in only one way, i.e., 120824064 + 14348944 = 10992^2 + 3788^2 .

It is not an unprimeable number, because it can be changed into a prime (135173009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4224141 + ... + 4224172.

Almost surely, 2^135173008 is an apocalyptic number.

It is an amenable number.

135173008 is a deficient number, since it is larger than the sum of its proper divisors (126724726).

135173008 is an equidigital number, since it uses as much as digits as its factorization.

135173008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8448321 (or 8448315 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 135173008 is about 11626.3927337760. The cubic root of 135173008 is about 513.2118308413.

The spelling of 135173008 in words is "one hundred thirty-five million, one hundred seventy-three thousand, eight".