136405332 has 144 divisors (see below), whose sum is σ = 428646400. Its totient is φ = 35691840.

The previous prime is 136405289. The next prime is 136405337. The reversal of 136405332 is 233504631.

It is a happy number.

136405332 is a `hidden beast` number, since 13 + 640 + 5 + 3 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 136405296 and 136405305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136405337) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147969 + ... + 148887.

Almost surely, 2^136405332 is an apocalyptic number.

136405332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136405332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214323200).

136405332 is an abundant number, since it is smaller than the sum of its proper divisors (292241068).

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

136405332 is a wasteful number, since it uses less digits than its factorization.

136405332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 136405332 is about 11679.2693264605. The cubic root of 136405332 is about 514.7667049029.

Adding to 136405332 its reverse (233504631), we get a palindrome (369909963).

The spelling of 136405332 in words is "one hundred thirty-six million, four hundred five thousand, three hundred thirty-two".