132720636 has 12 divisors (see below), whose sum is σ = 309681512. Its totient is φ = 44240208.

The previous prime is 132720629. The next prime is 132720667. The reversal of 132720636 is 636027231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×132720636² = 35229534440488992, 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 3 ways as a sum of consecutive naturals, for example, 5530015 + ... + 5530038.

Almost surely, 2^132720636 is an apocalyptic number.

It is an amenable number.

132720636 is an abundant number, since it is smaller than the sum of its proper divisors (176960876).

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

132720636 is a wasteful number, since it uses less digits than its factorization.

132720636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11060060 (or 11060058 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 132720636 is about 11520.4442622670. Note that the first 3 decimals coincide. The cubic root of 132720636 is about 510.0892269874.

Adding to 132720636 its reverse (636027231), we get a palindrome (768747867).

The spelling of 132720636 in words is "one hundred thirty-two million, seven hundred twenty thousand, six hundred thirty-six".