134815644 has 96 divisors (see below), whose sum is σ = 374391360. Its totient is φ = 41803776.

The previous prime is 134815643. The next prime is 134815663. The reversal of 134815644 is 446518431.

134815644 is a `hidden beast` number, since 1 + 3 + 4 + 8 + 1 + 5 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 134815599 and 134815608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134815643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177714 + ... + 178470.

It is an arithmetic number, because the mean of its divisors is an integer number (3899910).

Almost surely, 2^134815644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134815644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187195680).

134815644 is an abundant number, since it is smaller than the sum of its proper divisors (239575716).

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

134815644 is a wasteful number, since it uses less digits than its factorization.

134815644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 876 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 134815644 is about 11611.0139092157. The cubic root of 134815644 is about 512.7591633113.

The spelling of 134815644 in words is "one hundred thirty-four million, eight hundred fifteen thousand, six hundred forty-four".