136553730 has 64 divisors (see below), whose sum is σ = 335923200. Its totient is φ = 35514560.

The previous prime is 136553713. The next prime is 136553749. The reversal of 136553730 is 37355631.

It is a junction number, because it is equal to n+sod(n) for n = 136553691 and 136553700.

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, 316615 + ... + 317045.

It is an arithmetic number, because the mean of its divisors is an integer number (5248800).

Almost surely, 2^136553730 is an apocalyptic number.

136553730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136553730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167961600).

136553730 is an abundant number, since it is smaller than the sum of its proper divisors (199369470).

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

136553730 is a wasteful number, since it uses less digits than its factorization.

136553730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 28350, while the sum is 33.

The square root of 136553730 is about 11685.6206510395. The cubic root of 136553730 is about 514.9533121342.

The spelling of 136553730 in words is "one hundred thirty-six million, five hundred fifty-three thousand, seven hundred thirty".