133328256 has 32 divisors (see below), whose sum is σ = 354154200. Its totient is φ = 44442624.

The previous prime is 133328233. The next prime is 133328281. The reversal of 133328256 is 652823331.

It is a tau number, because it is divible by the number of its divisors (32).

It is a zygodrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173221 + ... + 173988.

Almost surely, 2^133328256 is an apocalyptic number.

133328256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133328256 is an abundant number, since it is smaller than the sum of its proper divisors (220825944).

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

133328256 is an equidigital number, since it uses as much as digits as its factorization.

133328256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347226 (or 347214 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 133328256 is about 11546.7855267169. The cubic root of 133328256 is about 510.8664701660.

The spelling of 133328256 in words is "one hundred thirty-three million, three hundred twenty-eight thousand, two hundred fifty-six".