134888640 has 112 divisors (see below), whose sum is σ = 434522880. Its totient is φ = 35445760.

The previous prime is 134888623. The next prime is 134888641. The reversal of 134888640 is 46888431.

It is a junction number, because it is equal to n+sod(n) for n = 134888592 and 134888601.

It is not an unprimeable number, because it can be changed into a prime (134888641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67171 + ... + 69149.

Almost surely, 2^134888640 is an apocalyptic number.

134888640 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 134888640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217261440).

134888640 is an abundant number, since it is smaller than the sum of its proper divisors (299634240).

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

134888640 is a wasteful number, since it uses less digits than its factorization.

134888640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070 (or 2060 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 134888640 is about 11614.1568785685. The cubic root of 134888640 is about 512.8516911847.

The spelling of 134888640 in words is "one hundred thirty-four million, eight hundred eighty-eight thousand, six hundred forty".