136322388 has 72 divisors (see below), whose sum is σ = 377493480. Its totient is φ = 41287680.

The previous prime is 136322377. The next prime is 136322411. The reversal of 136322388 is 883223631.

136322388 is a `hidden beast` number, since 13 + 632 + 2 + 3 + 8 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 50722884 + 85599504 = 7122^2 + 9252^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13908 + ... + 21588.

It is an arithmetic number, because the mean of its divisors is an integer number (5242965).

Almost surely, 2^136322388 is an apocalyptic number.

136322388 is a gapful number since it is divisible by the number (18) 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 136322388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188746740).

136322388 is an abundant number, since it is smaller than the sum of its proper divisors (241171092).

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

136322388 is a wasteful number, since it uses less digits than its factorization.

136322388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7737 (or 7732 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 136322388 is about 11675.7178794282. The cubic root of 136322388 is about 514.6623456717.

The spelling of 136322388 in words is "one hundred thirty-six million, three hundred twenty-two thousand, three hundred eighty-eight".