133255872 has 42 divisors (see below), whose sum is σ = 381955548. Its totient is φ = 44418432.

The previous prime is 133255847. The next prime is 133255883. The reversal of 133255872 is 278552331.

It is a happy number.

133255872 is a `hidden beast` number, since 1 + 3 + 32 + 558 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115098 + ... + 116249.

Almost surely, 2^133255872 is an apocalyptic number.

133255872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133255872 is an abundant number, since it is smaller than the sum of its proper divisors (248699676).

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

133255872 is a wasteful number, since it uses less digits than its factorization.

133255872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231365 (or 231352 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 133255872 is about 11543.6507223668. The cubic root of 133255872 is about 510.7740035137.

The spelling of 133255872 in words is "one hundred thirty-three million, two hundred fifty-five thousand, eight hundred seventy-two".