136191216 has 160 divisors (see below), whose sum is σ = 431543808. Its totient is φ = 36126720.

The previous prime is 136191193. The next prime is 136191281. The reversal of 136191216 is 612191631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 645351 + ... + 645561.

Almost surely, 2^136191216 is an apocalyptic number.

136191216 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 136191216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215771904).

136191216 is an abundant number, since it is smaller than the sum of its proper divisors (295352592).

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

136191216 is a wasteful number, since it uses less digits than its factorization.

136191216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 353 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 136191216 is about 11670.0992283699. The cubic root of 136191216 is about 514.4972200586.

The spelling of 136191216 in words is "one hundred thirty-six million, one hundred ninety-one thousand, two hundred sixteen".