135139716 has 36 divisors (see below), whose sum is σ = 344805552. Its totient is φ = 44624304.

The previous prime is 135139709. The next prime is 135139729. The reversal of 135139716 is 617931531.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13690 + ... + 21393.

It is an arithmetic number, because the mean of its divisors is an integer number (9577932).

Almost surely, 2^135139716 is an apocalyptic number.

It is an amenable number.

135139716 is an abundant number, since it is smaller than the sum of its proper divisors (209665836).

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

135139716 is a wasteful number, since it uses less digits than its factorization.

135139716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35200 (or 35195 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 135139716 is about 11624.9609031601. The cubic root of 135139716 is about 513.1696940976.

The spelling of 135139716 in words is "one hundred thirty-five million, one hundred thirty-nine thousand, seven hundred sixteen".