134685720 has 256 divisors, whose sum is σ = 495331200. Its totient is φ = 32348160.

The previous prime is 134685709. The next prime is 134685833. The reversal of 134685720 is 27586431.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 744030 + ... + 744210.

Almost surely, 2^134685720 is an apocalyptic number.

134685720 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 134685720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247665600).

134685720 is an abundant number, since it is smaller than the sum of its proper divisors (360645480).

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

134685720 is a wasteful number, since it uses less digits than its factorization.

134685720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 134685720 is about 11605.4177003674. The cubic root of 134685720 is about 512.5943922905.

The spelling of 134685720 in words is "one hundred thirty-four million, six hundred eighty-five thousand, seven hundred twenty".