136335440 has 40 divisors (see below), whose sum is σ = 320265960. Its totient is φ = 53968896.

The previous prime is 136335403. The next prime is 136335449. The reversal of 136335440 is 44533631.

It can be written as a sum of positive squares in 4 ways, for example, as 99856 + 136235584 = 316^2 + 11672^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136335449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025 + ... + 16544.

It is an arithmetic number, because the mean of its divisors is an integer number (8006649).

Almost surely, 2^136335440 is an apocalyptic number.

136335440 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 136335440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160132980).

136335440 is an abundant number, since it is smaller than the sum of its proper divisors (183930520).

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

136335440 is a wasteful number, since it uses less digits than its factorization.

136335440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17679 (or 17673 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 136335440 is about 11676.2768038446. The cubic root of 136335440 is about 514.6787703609.

The spelling of 136335440 in words is "one hundred thirty-six million, three hundred thirty-five thousand, four hundred forty".