136049840 has 40 divisors (see below), whose sum is σ = 316996080. Its totient is φ = 54302976.

The previous prime is 136049839. The next prime is 136049867. The reversal of 136049840 is 48940631.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 136049840.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42206 + ... + 45314.

It is an arithmetic number, because the mean of its divisors is an integer number (7924902).

Almost surely, 2^136049840 is an apocalyptic number.

136049840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136049840 is an abundant number, since it is smaller than the sum of its proper divisors (180946240).

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

136049840 is a wasteful number, since it uses less digits than its factorization.

136049840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669 (or 3663 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 136049840 is about 11664.0404663221. The cubic root of 136049840 is about 514.3191303978.

The spelling of 136049840 in words is "one hundred thirty-six million, forty-nine thousand, eight hundred forty".