132721500 has 96 divisors (see below), whose sum is σ = 403393536. Its totient is φ = 33844800.

The previous prime is 132721489. The next prime is 132721531. The reversal of 132721500 is 5127231.

It is a super-2 number, since 2×132721500² = 35229993124500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32577 + ... + 36423.

It is an arithmetic number, because the mean of its divisors is an integer number (4202016).

Almost surely, 2^132721500 is an apocalyptic number.

132721500 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 132721500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201696768).

132721500 is an abundant number, since it is smaller than the sum of its proper divisors (270672036).

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

132721500 is a wasteful number, since it uses less digits than its factorization.

132721500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892 (or 3880 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 132721500 is about 11520.4817607598. The cubic root of 132721500 is about 510.0903338641.

Adding to 132721500 its reverse (5127231), we get a palindrome (137848731).

The spelling of 132721500 in words is "one hundred thirty-two million, seven hundred twenty-one thousand, five hundred".