135906290 has 32 divisors (see below), whose sum is σ = 267076656. Its totient is φ = 49489920.

The previous prime is 135906289. The next prime is 135906299. The reversal of 135906290 is 92609531.

It can be written as a sum of positive squares in 8 ways, for example, as 6105841 + 129800449 = 2471^2 + 11393^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 135906290.

It is not an unprimeable number, because it can be changed into a prime (135906299) 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 15 ways as a sum of consecutive naturals, for example, 2330 + ... + 16650.

Almost surely, 2^135906290 is an apocalyptic number.

135906290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135906290 is a deficient number, since it is larger than the sum of its proper divisors (131170366).

135906290 is a wasteful number, since it uses less digits than its factorization.

135906290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14414.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 135906290 is about 11657.8853142412. The cubic root of 135906290 is about 514.1381758954.

The spelling of 135906290 in words is "one hundred thirty-five million, nine hundred six thousand, two hundred ninety".