136404306 has 48 divisors (see below), whose sum is σ = 324642240. Its totient is φ = 41199840.

The previous prime is 136404263. The next prime is 136404341. The reversal of 136404306 is 603404631.

136404306 is a `hidden beast` number, since 13 + 640 + 4 + 3 + 0 + 6 = 666.

It is a super-2 number, since 2×136404306² = 37212269390683272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136404306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 805 + ... + 16536.

It is an arithmetic number, because the mean of its divisors is an integer number (6763380).

Almost surely, 2^136404306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136404306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162321120).

136404306 is an abundant number, since it is smaller than the sum of its proper divisors (188237934).

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

136404306 is a wasteful number, since it uses less digits than its factorization.

136404306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17391 (or 17388 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 136404306 is about 11679.2254023972. The cubic root of 136404306 is about 514.7654142594.

Adding to 136404306 its reverse (603404631), we get a palindrome (739808937).

The spelling of 136404306 in words is "one hundred thirty-six million, four hundred four thousand, three hundred six".