136221814 has 8 divisors (see below), whose sum is σ = 204388848. Its totient is φ = 68092200.

The previous prime is 136221809. The next prime is 136221817. The reversal of 136221814 is 418122631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136221817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3024 + ... + 16780.

It is an arithmetic number, because the mean of its divisors is an integer number (25548606).

Almost surely, 2^136221814 is an apocalyptic number.

136221814 is a deficient number, since it is larger than the sum of its proper divisors (68167034).

136221814 is a wasteful number, since it uses less digits than its factorization.

136221814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18710.

The product of its digits is 2304, while the sum is 28.

The square root of 136221814 is about 11671.4101118931. The cubic root of 136221814 is about 514.5357477689.

The spelling of 136221814 in words is "one hundred thirty-six million, two hundred twenty-one thousand, eight hundred fourteen".