135989672 has 32 divisors (see below), whose sum is σ = 313824000. Its totient is φ = 53797824.

The previous prime is 135989657. The next prime is 135989683. The reversal of 135989672 is 276989531.

It is a self number, because there is not a number n which added to its sum of digits gives 135989672.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92672 + ... + 94127.

It is an arithmetic number, because the mean of its divisors is an integer number (9807000).

Almost surely, 2^135989672 is an apocalyptic number.

It is an amenable number.

135989672 is an abundant number, since it is smaller than the sum of its proper divisors (177834328).

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

135989672 is a wasteful number, since it uses less digits than its factorization.

135989672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186825 (or 186821 counting only the distinct ones).

The product of its digits is 816480, while the sum is 50.

The square root of 135989672 is about 11661.4609719366. The cubic root of 135989672 is about 514.2433000588.

The spelling of 135989672 in words is "one hundred thirty-five million, nine hundred eighty-nine thousand, six hundred seventy-two".