134689280 has 80 divisors (see below), whose sum is σ = 352370304. Its totient is φ = 48967680.

The previous prime is 134689279. The next prime is 134689301. The reversal of 134689280 is 82986431.

It is a tau number, because it is divible by the number of its divisors (80).

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 7 ways as a sum of consecutive naturals, for example, 25769 + ... + 30551.

Almost surely, 2^134689280 is an apocalyptic number.

134689280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134689280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176185152).

134689280 is an abundant number, since it is smaller than the sum of its proper divisors (217681024).

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

134689280 is an equidigital number, since it uses as much as digits as its factorization.

134689280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4801 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 134689280 is about 11605.5710759962. The cubic root of 134689280 is about 512.5989085326.

The spelling of 134689280 in words is "one hundred thirty-four million, six hundred eighty-nine thousand, two hundred eighty".