136385726 has 4 divisors (see below), whose sum is σ = 204578592. Its totient is φ = 68192862.

The previous prime is 136385719. The next prime is 136385729. The reversal of 136385726 is 627583631.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136385729) by changing a digit.

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 as a sum of consecutive naturals, namely, 34096430 + ... + 34096433.

It is an arithmetic number, because the mean of its divisors is an integer number (51144648).

Almost surely, 2^136385726 is an apocalyptic number.

136385726 is a deficient number, since it is larger than the sum of its proper divisors (68192866).

136385726 is an equidigital number, since it uses as much as digits as its factorization.

136385726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68192865.

The product of its digits is 181440, while the sum is 41.

The square root of 136385726 is about 11678.4299458446. The cubic root of 136385726 is about 514.7420406676.

The spelling of 136385726 in words is "one hundred thirty-six million, three hundred eighty-five thousand, seven hundred twenty-six".