136644834 has 16 divisors (see below), whose sum is σ = 273572640. Its totient is φ = 45501120.

The previous prime is 136644829. The next prime is 136644857. The reversal of 136644834 is 438446631.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 136644792 and 136644801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5232 + ... + 17339.

It is an arithmetic number, because the mean of its divisors is an integer number (17098290).

Almost surely, 2^136644834 is an apocalyptic number.

136644834 is an abundant number, since it is smaller than the sum of its proper divisors (136927806).

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

136644834 is a wasteful number, since it uses less digits than its factorization.

136644834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23585.

The product of its digits is 165888, while the sum is 39.

The square root of 136644834 is about 11689.5181252265. The cubic root of 136644834 is about 515.0678064489.

The spelling of 136644834 in words is "one hundred thirty-six million, six hundred forty-four thousand, eight hundred thirty-four".