133232320 has 56 divisors (see below), whose sum is σ = 341674704. Its totient is φ = 49191936.

The previous prime is 133232303. The next prime is 133232321. The reversal of 133232320 is 23232331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133232321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11854 + ... + 20173.

It is an arithmetic number, because the mean of its divisors is an integer number (6101334).

Almost surely, 2^133232320 is an apocalyptic number.

133232320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133232320 is an abundant number, since it is smaller than the sum of its proper divisors (208442384).

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

133232320 is a wasteful number, since it uses less digits than its factorization.

133232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32057 (or 32047 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 133232320 is about 11542.6305494025. The cubic root of 133232320 is about 510.7439098852.

Adding to 133232320 its reverse (23232331), we get a palindrome (156464651).

The spelling of 133232320 in words is "one hundred thirty-three million, two hundred thirty-two thousand, three hundred twenty".