136824138 has 48 divisors (see below), whose sum is σ = 326132352. Its totient is φ = 41454600.

The previous prime is 136824133. The next prime is 136824161. The reversal of 136824138 is 831428631.

It is not an unprimeable number, because it can be changed into a prime (136824131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21103 + ... + 26813.

It is an arithmetic number, because the mean of its divisors is an integer number (6794424).

Almost surely, 2^136824138 is an apocalyptic number.

136824138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136824138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163066176).

136824138 is an abundant number, since it is smaller than the sum of its proper divisors (189308214).

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

136824138 is a wasteful number, since it uses less digits than its factorization.

136824138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752 (or 5727 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 136824138 is about 11697.1850459844. The cubic root of 136824138 is about 515.2929969409.

The spelling of 136824138 in words is "one hundred thirty-six million, eight hundred twenty-four thousand, one hundred thirty-eight".