133128326 has 16 divisors (see below), whose sum is σ = 222568560. Its totient is φ = 59351040.

The previous prime is 133128319. The next prime is 133128389. The reversal of 133128326 is 623821331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102395 + ... + 103686.

It is an arithmetic number, because the mean of its divisors is an integer number (13910535).

Almost surely, 2^133128326 is an apocalyptic number.

133128326 is a deficient number, since it is larger than the sum of its proper divisors (89440234).

133128326 is a wasteful number, since it uses less digits than its factorization.

133128326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206119.

The product of its digits is 5184, while the sum is 29.

The square root of 133128326 is about 11538.1248909864. The cubic root of 133128326 is about 510.6109888653.

Adding to 133128326 its reverse (623821331), we get a palindrome (756949657).

The spelling of 133128326 in words is "one hundred thirty-three million, one hundred twenty-eight thousand, three hundred twenty-six".