133256889 has 6 divisors (see below), whose sum is σ = 192482186. Its totient is φ = 88837920.

The previous prime is 133256887. The next prime is 133256911. The reversal of 133256889 is 988652331.

It is a happy number.

133256889 is a `hidden beast` number, since 1 + 3 + 3 + 2 + 568 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 102819600 + 30437289 = 10140^2 + 5517^2 .

It is not a de Polignac number, because 133256889 - 2¹ = 133256887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133256881) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 7403152 + ... + 7403169.

Almost surely, 2^133256889 is an apocalyptic number.

It is an amenable number.

133256889 is a deficient number, since it is larger than the sum of its proper divisors (59225297).

133256889 is a wasteful number, since it uses less digits than its factorization.

133256889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14806327 (or 14806324 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 133256889 is about 11543.6947724721. The cubic root of 133256889 is about 510.7753029082.

The spelling of 133256889 in words is "one hundred thirty-three million, two hundred fifty-six thousand, eight hundred eighty-nine".