134457840 has 160 divisors (see below), whose sum is σ = 505324800. Its totient is φ = 32590080.

The previous prime is 134457809. The next prime is 134457853. The reversal of 134457840 is 48754431.

134457840 is a `hidden beast` number, since 1 + 3 + 44 + 578 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 134457795 and 134457804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20931 + ... + 26589.

It is an arithmetic number, because the mean of its divisors is an integer number (3158280).

Almost surely, 2^134457840 is an apocalyptic number.

134457840 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 134457840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252662400).

134457840 is an abundant number, since it is smaller than the sum of its proper divisors (370866960).

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

134457840 is a wasteful number, since it uses less digits than its factorization.

134457840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5692 (or 5680 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 134457840 is about 11595.5957156155. The cubic root of 134457840 is about 512.3051363086.

The spelling of 134457840 in words is "one hundred thirty-four million, four hundred fifty-seven thousand, eight hundred forty".