133230320 has 80 divisors (see below), whose sum is σ = 320604480. Its totient is φ = 51456000.

The previous prime is 133230259. The next prime is 133230341. The reversal of 133230320 is 23032331.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 495146 + ... + 495414.

It is an arithmetic number, because the mean of its divisors is an integer number (4007556).

Almost surely, 2^133230320 is an apocalyptic number.

133230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133230320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160302240).

133230320 is an abundant number, since it is smaller than the sum of its proper divisors (187374160).

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

133230320 is a wasteful number, since it uses less digits than its factorization.

133230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 133230320 is about 11542.5439137133. The cubic root of 133230320 is about 510.7413542167.

Adding to 133230320 its reverse (23032331), we get a palindrome (156262651).

The spelling of 133230320 in words is "one hundred thirty-three million, two hundred thirty thousand, three hundred twenty".