136393216 has 40 divisors (see below), whose sum is σ = 273803904. Its totient is φ = 67875840.

The previous prime is 136393181. The next prime is 136393217. The reversal of 136393216 is 612393631.

It is not an unprimeable number, because it can be changed into a prime (136393217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138261 + ... + 139243.

Almost surely, 2^136393216 is an apocalyptic number.

136393216 is a gapful number since it is divisible by the number (16) 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 136393216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136901952).

136393216 is an abundant number, since it is smaller than the sum of its proper divisors (137410688).

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

136393216 is an frugal number, since it uses more digits than its factorization.

136393216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1256 counting only the distinct ones).

The product of its digits is 17496, while the sum is 34.

The square root of 136393216 is about 11678.7506181098. The cubic root of 136393216 is about 514.7514633235.

The spelling of 136393216 in words is "one hundred thirty-six million, three hundred ninety-three thousand, two hundred sixteen".