134441640 has 128 divisors (see below), whose sum is σ = 450748800. Its totient is φ = 35642880.

The previous prime is 134441639. The next prime is 134441641. The reversal of 134441640 is 46144431.

134441640 is a `hidden beast` number, since 13 + 4 + 4 + 4 + 1 + 640 = 666.

It is an interprime number because it is at equal distance from previous prime (134441639) and next prime (134441641).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (134441641) 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, 303259 + ... + 303701.

It is an arithmetic number, because the mean of its divisors is an integer number (3521475).

Almost surely, 2^134441640 is an apocalyptic number.

134441640 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 134441640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225374400).

134441640 is an abundant number, since it is smaller than the sum of its proper divisors (316307160).

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

134441640 is a wasteful number, since it uses less digits than its factorization.

134441640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 134441640 is about 11594.8971534895. The cubic root of 134441640 is about 512.2845606482.

The spelling of 134441640 in words is "one hundred thirty-four million, four hundred forty-one thousand, six hundred forty".