136818720 has 384 divisors, whose sum is σ = 535610880. Its totient is φ = 32845824.

The previous prime is 136818719. The next prime is 136818761. The reversal of 136818720 is 27818631.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5948629 + ... + 5948651.

It is an arithmetic number, because the mean of its divisors is an integer number (1394820).

Almost surely, 2^136818720 is an apocalyptic number.

136818720 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 136818720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267805440).

136818720 is an abundant number, since it is smaller than the sum of its proper divisors (398792160).

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

136818720 is an equidigital number, since it uses as much as digits as its factorization.

136818720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 136818720 is about 11696.9534495098. The cubic root of 136818720 is about 515.2861952796.

The spelling of 136818720 in words is "one hundred thirty-six million, eight hundred eighteen thousand, seven hundred twenty".