134643720 has 64 divisors (see below), whose sum is σ = 412542720. Its totient is φ = 35139584.

The previous prime is 134643697. The next prime is 134643779. The reversal of 134643720 is 27346431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6297 + ... + 17576.

It is an arithmetic number, because the mean of its divisors is an integer number (6445980).

Almost surely, 2^134643720 is an apocalyptic number.

134643720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134643720 is an abundant number, since it is smaller than the sum of its proper divisors (277899000).

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

134643720 is a wasteful number, since it uses less digits than its factorization.

134643720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23934 (or 23930 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 134643720 is about 11603.6080595649. The cubic root of 134643720 is about 512.5411047737.

The spelling of 134643720 in words is "one hundred thirty-four million, six hundred forty-three thousand, seven hundred twenty".