133887782 has 16 divisors (see below), whose sum is σ = 229911072. Its totient is φ = 57283200.

The previous prime is 133887781. The next prime is 133887823. The reversal of 133887782 is 287788331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133887781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782 + ... + 16382.

It is an arithmetic number, because the mean of its divisors is an integer number (14369442).

Almost surely, 2^133887782 is an apocalyptic number.

133887782 is a deficient number, since it is larger than the sum of its proper divisors (96023290).

133887782 is a wasteful number, since it uses less digits than its factorization.

133887782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16223.

The product of its digits is 451584, while the sum is 47.

The square root of 133887782 is about 11570.9888082221. The cubic root of 133887782 is about 511.5801077049.

The spelling of 133887782 in words is "one hundred thirty-three million, eight hundred eighty-seven thousand, seven hundred eighty-two".