133976 has 8 divisors (see below), whose sum is σ = 251220. Its totient is φ = 66984.

The previous prime is 133967. The next prime is 133979. The reversal of 133976 is 679331.

133976 = T₁₇₉ + T₁₈₀ + ... + T₁₈₆.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133979) by changing a digit.

133976 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8366 + ... + 8381.

2¹³³⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

133976 is a deficient number, since it is larger than the sum of its proper divisors (117244).

133976 is a wasteful number, since it uses less digits than its factorization.

133976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16753 (or 16749 counting only the distinct ones).

The product of its digits is 3402, while the sum is 29.

The square root of 133976 is about 366.0273213846. The cubic root of 133976 is about 51.1692442241.

The spelling of 133976 in words is "one hundred thirty-three thousand, nine hundred seventy-six".