133321160 has 96 divisors (see below), whose sum is σ = 351630720. Its totient is φ = 45360000.

The previous prime is 133321147. The next prime is 133321163. The reversal of 133321160 is 61123331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (133321163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491825 + ... + 492095.

It is an arithmetic number, because the mean of its divisors is an integer number (3662820).

Almost surely, 2^133321160 is an apocalyptic number.

133321160 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 133321160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175815360).

133321160 is an abundant number, since it is smaller than the sum of its proper divisors (218309560).

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

133321160 is a wasteful number, since it uses less digits than its factorization.

133321160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 133321160 is about 11546.4782509647. The cubic root of 133321160 is about 510.8574068889.

Adding to 133321160 its reverse (61123331), we get a palindrome (194444491).

The spelling of 133321160 in words is "one hundred thirty-three million, three hundred twenty-one thousand, one hundred sixty".