133684072 has 16 divisors (see below), whose sum is σ = 250797060. Its totient is φ = 66804864.

The previous prime is 133684069. The next prime is 133684091. The reversal of 133684072 is 270486331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 132848676 + 835396 = 11526^2 + 914^2 .

It is a super-2 number, since 2×133684072² = 35742862213002368, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16068 + ... + 22924.

Almost surely, 2^133684072 is an apocalyptic number.

It is an amenable number.

133684072 is a deficient number, since it is larger than the sum of its proper divisors (117112988).

133684072 is a wasteful number, since it uses less digits than its factorization.

133684072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9300 (or 9296 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 133684072 is about 11562.1828388934. The cubic root of 133684072 is about 511.3205199599.

The spelling of 133684072 in words is "one hundred thirty-three million, six hundred eighty-four thousand, seventy-two".