136891344 has 40 divisors (see below), whose sum is σ = 374440320. Its totient is φ = 42946048.

The previous prime is 136891309. The next prime is 136891351. The reversal of 136891344 is 443198631.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 83064 + ... + 84695.

It is an arithmetic number, because the mean of its divisors is an integer number (9361008).

Almost surely, 2^136891344 is an apocalyptic number.

It is an amenable number.

136891344 is an abundant number, since it is smaller than the sum of its proper divisors (237548976).

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

136891344 is a wasteful number, since it uses less digits than its factorization.

136891344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167787 (or 167781 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 136891344 is about 11700.0574357565. The cubic root of 136891344 is about 515.3773512396.

The spelling of 136891344 in words is "one hundred thirty-six million, eight hundred ninety-one thousand, three hundred forty-four".