136340 has 24 divisors (see below), whose sum is σ = 303912. Its totient is φ = 51200.

The previous prime is 136337. The next prime is 136343. The reversal of 136340 is 43631.

It is an interprime number because it is at equal distance from previous prime (136337) and next prime (136343).

It can be written as a sum of positive squares in 4 ways, for example, as 71824 + 64516 = 268^2 + 254^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136343) 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, 140 + ... + 540.

It is an arithmetic number, because the mean of its divisors is an integer number (12663).

2¹³⁶³⁴⁰ is an apocalyptic number.

136340 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 136340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151956).

136340 is an abundant number, since it is smaller than the sum of its proper divisors (167572).

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

136340 is a wasteful number, since it uses less digits than its factorization.

136340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 136340 is about 369.2424677634. The cubic root of 136340 is about 51.4684508436.

Adding to 136340 its reverse (43631), we get a palindrome (179971).

The spelling of 136340 in words is "one hundred thirty-six thousand, three hundred forty".