133127720 has 32 divisors (see below), whose sum is σ = 326769120. Its totient is φ = 48409920.

The previous prime is 133127717. The next prime is 133127741. The reversal of 133127720 is 27721331.

133127720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 133127720.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150842 + ... + 151721.

It is an arithmetic number, because the mean of its divisors is an integer number (10211535).

Almost surely, 2^133127720 is an apocalyptic number.

133127720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133127720 is an abundant number, since it is smaller than the sum of its proper divisors (193641400).

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

133127720 is a wasteful number, since it uses less digits than its factorization.

133127720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302585 (or 302581 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 133127720 is about 11538.0986301903. The cubic root of 133127720 is about 510.6102140972.

The spelling of 133127720 in words is "one hundred thirty-three million, one hundred twenty-seven thousand, seven hundred twenty".