133405326 has 32 divisors (see below), whose sum is σ = 298116000. Its totient is φ = 44219520.

The previous prime is 133405303. The next prime is 133405333. The reversal of 133405326 is 623504331.

It is a happy number.

133405326 is a `hidden beast` number, since 1 + 334 + 0 + 5 + 326 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 133405326.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2950 + ... + 16598.

It is an arithmetic number, because the mean of its divisors is an integer number (9316125).

Almost surely, 2^133405326 is an apocalyptic number.

133405326 is an abundant number, since it is smaller than the sum of its proper divisors (164710674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133405326 is a wasteful number, since it uses less digits than its factorization.

133405326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13841 (or 13835 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 133405326 is about 11550.1223370144. The cubic root of 133405326 is about 510.9648861510.

Adding to 133405326 its reverse (623504331), we get a palindrome (756909657).

The spelling of 133405326 in words is "one hundred thirty-three million, four hundred five thousand, three hundred twenty-six".