136188404 has 18 divisors (see below), whose sum is σ = 261966642. Its totient is φ = 61903600.

The previous prime is 136188401. The next prime is 136188413. The reversal of 136188404 is 404881631.

It can be written as a sum of positive squares in only one way, i.e., 91164304 + 45024100 = 9548^2 + 6710^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136188401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140207 + ... + 141174.

Almost surely, 2^136188404 is an apocalyptic number.

It is an amenable number.

136188404 is a deficient number, since it is larger than the sum of its proper divisors (125778238).

136188404 is a wasteful number, since it uses less digits than its factorization.

136188404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281407 (or 281394 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 136188404 is about 11669.9787489095. The cubic root of 136188404 is about 514.4936790174.

It can be divided in two parts, 13618 and 8404, that added together give a palindrome (22022).

The spelling of 136188404 in words is "one hundred thirty-six million, one hundred eighty-eight thousand, four hundred four".