133432272 has 60 divisors (see below), whose sum is σ = 387266880. Its totient is φ = 44476128.

The previous prime is 133432253. The next prime is 133432279. The reversal of 133432272 is 272234331.

133432272 is a `hidden beast` number, since 1 + 334 + 322 + 7 + 2 = 666.

It is a super-2 number, since 2×133432272² = 35608342422163968, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133432279) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 13272 + ... + 21047.

It is an arithmetic number, because the mean of its divisors is an integer number (6454448).

Almost surely, 2^133432272 is an apocalyptic number.

133432272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133432272 is an abundant number, since it is smaller than the sum of its proper divisors (253834608).

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

133432272 is an equidigital number, since it uses as much as digits as its factorization.

133432272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34342 (or 34324 counting only the distinct ones).

The product of its digits is 6048, while the sum is 27.

The square root of 133432272 is about 11551.2887592684. The cubic root of 133432272 is about 510.9992864090. Note that the first 3 decimals are identical.

The spelling of 133432272 in words is "one hundred thirty-three million, four hundred thirty-two thousand, two hundred seventy-two".