136299880 has 64 divisors (see below), whose sum is σ = 326514240. Its totient is φ = 51028992.

The previous prime is 136299869. The next prime is 136299887. The reversal of 136299880 is 88992631.

It is a self number, because there is not a number n which added to its sum of digits gives 136299880.

It is not an unprimeable number, because it can be changed into a prime (136299887) 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 15 ways as a sum of consecutive naturals, for example, 153919 + ... + 154801.

It is an arithmetic number, because the mean of its divisors is an integer number (5101785).

Almost surely, 2^136299880 is an apocalyptic number.

136299880 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 136299880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163257120).

136299880 is an abundant number, since it is smaller than the sum of its proper divisors (190214360).

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

136299880 is a wasteful number, since it uses less digits than its factorization.

136299880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 136299880 is about 11674.7539588635. The cubic root of 136299880 is about 514.6340190512.

The spelling of 136299880 in words is "one hundred thirty-six million, two hundred ninety-nine thousand, eight hundred eighty".