134778384 has 160 divisors (see below), whose sum is σ = 422472960. Its totient is φ = 40891392.

The previous prime is 134778379. The next prime is 134778389. The reversal of 134778384 is 483877431.

It is an interprime number because it is at equal distance from previous prime (134778379) and next prime (134778389).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134778389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578332 + ... + 578564.

It is an arithmetic number, because the mean of its divisors is an integer number (2640456).

Almost surely, 2^134778384 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 134778384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211236480).

134778384 is an abundant number, since it is smaller than the sum of its proper divisors (287694576).

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

134778384 is a wasteful number, since it uses less digits than its factorization.

134778384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 354 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 134778384 is about 11609.4092872980. The cubic root of 134778384 is about 512.7119206070.

The spelling of 134778384 in words is "one hundred thirty-four million, seven hundred seventy-eight thousand, three hundred eighty-four".