136134840 has 64 divisors (see below), whose sum is σ = 419456160. Its totient is φ = 35320320.

The previous prime is 136134811. The next prime is 136134841. The reversal of 136134840 is 48431631.

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 = 136134798 and 136134807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136134841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10891 + ... + 19770.

Almost surely, 2^136134840 is an apocalyptic number.

136134840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136134840 is an abundant number, since it is smaller than the sum of its proper divisors (283321320).

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

136134840 is a wasteful number, since it uses less digits than its factorization.

136134840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30712 (or 30708 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 136134840 is about 11667.6835747290. The cubic root of 136134840 is about 514.4262186650.

The spelling of 136134840 in words is "one hundred thirty-six million, one hundred thirty-four thousand, eight hundred forty".