133388673 has 8 divisors (see below), whose sum is σ = 194019936. Its totient is φ = 80841600.

The previous prime is 133388659. The next prime is 133388693. The reversal of 133388673 is 376883331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133388673 - 2⁴ = 133388657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133388653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2021008 + ... + 2021073.

It is an arithmetic number, because the mean of its divisors is an integer number (24252492).

Almost surely, 2^133388673 is an apocalyptic number.

It is an amenable number.

133388673 is a deficient number, since it is larger than the sum of its proper divisors (60631263).

133388673 is a wasteful number, since it uses less digits than its factorization.

133388673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042095.

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

The square root of 133388673 is about 11549.4014130603. The cubic root of 133388673 is about 510.9436240005.

The spelling of 133388673 in words is "one hundred thirty-three million, three hundred eighty-eight thousand, six hundred seventy-three".