133672306 has 4 divisors (see below), whose sum is σ = 200508462. Its totient is φ = 66836152.

The previous prime is 133672283. The next prime is 133672349. The reversal of 133672306 is 603276331.

133672306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 118919025 + 14753281 = 10905^2 + 3841^2 .

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 as a sum of consecutive naturals, namely, 33418075 + ... + 33418078.

Almost surely, 2^133672306 is an apocalyptic number.

133672306 is a deficient number, since it is larger than the sum of its proper divisors (66836156).

133672306 is an equidigital number, since it uses as much as digits as its factorization.

133672306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66836155.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 133672306 is about 11561.6740137404. The cubic root of 133672306 is about 511.3055184875.

The spelling of 133672306 in words is "one hundred thirty-three million, six hundred seventy-two thousand, three hundred six".