136097920 has 128 divisors (see below), whose sum is σ = 393932160. Its totient is φ = 43892736.

The previous prime is 136097909. The next prime is 136097921. The reversal of 136097920 is 29790631.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 136097920.

It is not an unprimeable number, because it can be changed into a prime (136097921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75267 + ... + 77053.

It is an arithmetic number, because the mean of its divisors is an integer number (3077595).

Almost surely, 2^136097920 is an apocalyptic number.

136097920 is a gapful number since it is divisible by the number (10) 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 136097920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196966080).

136097920 is an abundant number, since it is smaller than the sum of its proper divisors (257834240).

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

136097920 is a wasteful number, since it uses less digits than its factorization.

136097920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1818 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 136097920 is about 11666.1013196355. The cubic root of 136097920 is about 514.3797100387.

The spelling of 136097920 in words is "one hundred thirty-six million, ninety-seven thousand, nine hundred twenty".