133030320 has 40 divisors (see below), whose sum is σ = 412394736. Its totient is φ = 35474688.

The previous prime is 133030319. The next prime is 133030327. The reversal of 133030320 is 23030331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 133030320.

It is not an unprimeable number, because it can be changed into a prime (133030327) 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, 276907 + ... + 277386.

Almost surely, 2^133030320 is an apocalyptic number.

133030320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133030320 is an abundant number, since it is smaller than the sum of its proper divisors (279364416).

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

133030320 is a wasteful number, since it uses less digits than its factorization.

133030320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554309 (or 554303 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 133030320 is about 11533.8770584743. The cubic root of 133030320 is about 510.4856580980.

133030320 divided by its sum of digits (15) gives a palindrome (8868688).

Adding to 133030320 its reverse (23030331), we get a palindrome (156060651).

The spelling of 133030320 in words is "one hundred thirty-three million, thirty thousand, three hundred twenty".