133672866 has 32 divisors (see below), whose sum is σ = 282163200. Its totient is φ = 42100560.

The previous prime is 133672859. The next prime is 133672867. The reversal of 133672866 is 668276331.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133672867) 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 15 ways as a sum of consecutive naturals, for example, 48711 + ... + 51381.

It is an arithmetic number, because the mean of its divisors is an integer number (8817600).

Almost surely, 2^133672866 is an apocalyptic number.

133672866 is an abundant number, since it is smaller than the sum of its proper divisors (148490334).

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

133672866 is a wasteful number, since it uses less digits than its factorization.

133672866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134.

The product of its digits is 217728, while the sum is 42.

The square root of 133672866 is about 11561.6982316613. The cubic root of 133672866 is about 511.3062324990.

The spelling of 133672866 in words is "one hundred thirty-three million, six hundred seventy-two thousand, eight hundred sixty-six".