135936438 has 32 divisors (see below), whose sum is σ = 299376000. Its totient is φ = 40805760.

The previous prime is 135936421. The next prime is 135936481. The reversal of 135936438 is 834639531.

It is a super-2 number, since 2×135936438² = 36957430352255688, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 135936438.

It is a congruent number.

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, 2563 + ... + 16686.

It is an arithmetic number, because the mean of its divisors is an integer number (9355500).

Almost surely, 2^135936438 is an apocalyptic number.

135936438 is an abundant number, since it is smaller than the sum of its proper divisors (163439562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135936438 is a wasteful number, since it uses less digits than its factorization.

135936438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19372.

The product of its digits is 233280, while the sum is 42.

The square root of 135936438 is about 11659.1782729316. The cubic root of 135936438 is about 514.1761900588.

The spelling of 135936438 in words is "one hundred thirty-five million, nine hundred thirty-six thousand, four hundred thirty-eight".