132721344 has 84 divisors (see below), whose sum is σ = 434780944. Its totient is φ = 37919232.

The previous prime is 132721333. The next prime is 132721357. The reversal of 132721344 is 443127231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (84).

It is a super-2 number, since 2×132721344² = 35229910306332672, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

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, 12427 + ... + 20490.

Almost surely, 2^132721344 is an apocalyptic number.

132721344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

132721344 is an abundant number, since it is smaller than the sum of its proper divisors (302059600).

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

132721344 is a wasteful number, since it uses less digits than its factorization.

132721344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32942 (or 32929 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 132721344 is about 11520.4749902077. The cubic root of 132721344 is about 510.0901340117.

Adding to 132721344 its reverse (443127231), we get a palindrome (575848575).

The spelling of 132721344 in words is "one hundred thirty-two million, seven hundred twenty-one thousand, three hundred forty-four".