135908210 has 32 divisors (see below), whose sum is σ = 253810800. Its totient is φ = 52335360.

The previous prime is 135908209. The next prime is 135908221. The reversal of 135908210 is 12809531.

It can be written as a sum of positive squares in 8 ways, for example, as 53479969 + 82428241 = 7313^2 + 9079^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

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, 191336 + ... + 192044.

Almost surely, 2^135908210 is an apocalyptic number.

135908210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135908210 is a deficient number, since it is larger than the sum of its proper divisors (117902590).

135908210 is a wasteful number, since it uses less digits than its factorization.

135908210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 135908210 is about 11657.9676616467. The cubic root of 135908210 is about 514.1405970261.

The spelling of 135908210 in words is "one hundred thirty-five million, nine hundred eight thousand, two hundred ten".