133308406 has 16 divisors (see below), whose sum is σ = 249304320. Its totient is φ = 51938280.

The previous prime is 133308397. The next prime is 133308421. The reversal of 133308406 is 604803331.

133308406 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×133308406² = 35542262220521672, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 432666 + ... + 432973.

It is an arithmetic number, because the mean of its divisors is an integer number (15581520).

Almost surely, 2^133308406 is an apocalyptic number.

133308406 is a deficient number, since it is larger than the sum of its proper divisors (115995914).

133308406 is a wasteful number, since it uses less digits than its factorization.

133308406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865659.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 133308406 is about 11545.9259481429. The cubic root of 133308406 is about 510.8411161937.

It can be divided in two parts, 13330 and 8406, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 133308406 in words is "one hundred thirty-three million, three hundred eight thousand, four hundred six".