136805340 has 96 divisors (see below), whose sum is σ = 439617024. Its totient is φ = 31138560.

The previous prime is 136805299. The next prime is 136805351. The reversal of 136805340 is 43508631.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 136805298 and 136805307.

It is a congruent number.

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, 128410 + ... + 129470.

It is an arithmetic number, because the mean of its divisors is an integer number (4579344).

Almost surely, 2^136805340 is an apocalyptic number.

136805340 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 136805340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219808512).

136805340 is an abundant number, since it is smaller than the sum of its proper divisors (302811684).

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

136805340 is a wasteful number, since it uses less digits than its factorization.

136805340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 136805340 is about 11696.3814917264. The cubic root of 136805340 is about 515.2693974953.

The spelling of 136805340 in words is "one hundred thirty-six million, eight hundred five thousand, three hundred forty".