136705872 has 40 divisors (see below), whose sum is σ = 354345376. Its totient is φ = 45415296.

The previous prime is 136705867. The next prime is 136705909. The reversal of 136705872 is 278507631.

It is a self number, because there is not a number n which added to its sum of digits gives 136705872.

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 7 ways as a sum of consecutive naturals, for example, 10098 + ... + 19374.

Almost surely, 2^136705872 is an apocalyptic number.

136705872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

136705872 is an abundant number, since it is smaller than the sum of its proper divisors (217639504).

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

136705872 is a wasteful number, since it uses less digits than its factorization.

136705872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9595 (or 9589 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 136705872 is about 11692.1286342565. The cubic root of 136705872 is about 515.1444870616.

The spelling of 136705872 in words is "one hundred thirty-six million, seven hundred five thousand, eight hundred seventy-two".