133887873 has 16 divisors (see below), whose sum is σ = 205324160. Its totient is φ = 76018176.

The previous prime is 133887833. The next prime is 133887877. The reversal of 133887873 is 378788331.

It is not a de Polignac number, because 133887873 - 2⁸ = 133887617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133887877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17008 + ... + 23601.

It is an arithmetic number, because the mean of its divisors is an integer number (12832760).

Almost surely, 2^133887873 is an apocalyptic number.

It is an amenable number.

133887873 is a deficient number, since it is larger than the sum of its proper divisors (71436287).

133887873 is a wasteful number, since it uses less digits than its factorization.

133887873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40776.

The product of its digits is 677376, while the sum is 48.

The square root of 133887873 is about 11570.9927404696. The cubic root of 133887873 is about 511.5802236074.

The spelling of 133887873 in words is "one hundred thirty-three million, eight hundred eighty-seven thousand, eight hundred seventy-three".