135291290 has 32 divisors (see below), whose sum is σ = 258304896. Its totient is φ = 50909760.

The previous prime is 135291271. The next prime is 135291311. The reversal of 135291290 is 92192531.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9209 + ... + 18851.

It is an arithmetic number, because the mean of its divisors is an integer number (8072028).

Almost surely, 2^135291290 is an apocalyptic number.

135291290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135291290 is a deficient number, since it is larger than the sum of its proper divisors (123013606).

135291290 is a wasteful number, since it uses less digits than its factorization.

135291290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9734.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 135291290 is about 11631.4784099013. The cubic root of 135291290 is about 513.3614810937.

The spelling of 135291290 in words is "one hundred thirty-five million, two hundred ninety-one thousand, two hundred ninety".