134428 has 12 divisors (see below), whose sum is σ = 268912. Its totient is φ = 57600.

The previous prime is 134417. The next prime is 134437. The reversal of 134428 is 824431.

134428 is an admirable number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 134399 and 134408.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2373 + ... + 2428.

2¹³⁴⁴²⁸ is an apocalyptic number.

It is an amenable number.

134428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

134428 is a wasteful number, since it uses less digits than its factorization.

134428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812 (or 4810 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 134428 is about 366.6442417385. The cubic root of 134428 is about 51.2267235169.

Adding to 134428 its reverse (824431), we get a palindrome (958859).

The spelling of 134428 in words is "one hundred thirty-four thousand, four hundred twenty-eight".