136787844 has 12 divisors (see below), whose sum is σ = 319171664. Its totient is φ = 45595944.

The previous prime is 136787843. The next prime is 136787851. The reversal of 136787844 is 448787631.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 136787793 and 136787802.

It is not an unprimeable number, because it can be changed into a prime (136787843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5699482 + ... + 5699505.

Almost surely, 2^136787844 is an apocalyptic number.

It is an amenable number.

136787844 is an abundant number, since it is smaller than the sum of its proper divisors (182383820).

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

136787844 is a wasteful number, since it uses less digits than its factorization.

136787844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11398994 (or 11398992 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 136787844 is about 11695.6335441908. The cubic root of 136787844 is about 515.2474306683.

The spelling of 136787844 in words is "one hundred thirty-six million, seven hundred eighty-seven thousand, eight hundred forty-four".