132009728 has 18 divisors (see below), whose sum is σ = 263504304. Its totient is φ = 66004736.

The previous prime is 132009671. The next prime is 132009733. The reversal of 132009728 is 827900231.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 132009694 and 132009703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257576 + ... + 258087.

It is an arithmetic number, because the mean of its divisors is an integer number (14639128).

Almost surely, 2^132009728 is an apocalyptic number.

It is an amenable number.

132009728 is a deficient number, since it is larger than the sum of its proper divisors (131494576).

132009728 is an frugal number, since it uses more digits than its factorization.

132009728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515679 (or 515665 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 132009728 is about 11489.5486421356. The cubic root of 132009728 is about 509.1768446149.

Adding to 132009728 its reverse (827900231), we get a palindrome (959909959).

The spelling of 132009728 in words is "one hundred thirty-two million, nine thousand, seven hundred twenty-eight".