133446380 has 12 divisors (see below), whose sum is σ = 280237440. Its totient is φ = 53378544.

The previous prime is 133446373. The next prime is 133446407. The reversal of 133446380 is 83644331.

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 3 ways as a sum of consecutive naturals, for example, 3336140 + ... + 3336179.

It is an arithmetic number, because the mean of its divisors is an integer number (23353120).

Almost surely, 2^133446380 is an apocalyptic number.

133446380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133446380 is an abundant number, since it is smaller than the sum of its proper divisors (146791060).

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

133446380 is a wasteful number, since it uses less digits than its factorization.

133446380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672328 (or 6672326 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 133446380 is about 11551.8994109194. The cubic root of 133446380 is about 511.0172953553.

The spelling of 133446380 in words is "one hundred thirty-three million, four hundred forty-six thousand, three hundred eighty".