132784509 has 16 divisors (see below), whose sum is σ = 207998784. Its totient is φ = 74284800.

The previous prime is 132784507. The next prime is 132784513. The reversal of 132784509 is 905487231.

It is not a de Polignac number, because 132784509 - 2¹ = 132784507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132784507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154332 + ... + 155189.

It is an arithmetic number, because the mean of its divisors is an integer number (12999924).

Almost surely, 2^132784509 is an apocalyptic number.

It is an amenable number.

132784509 is a deficient number, since it is larger than the sum of its proper divisors (75214275).

132784509 is a wasteful number, since it uses less digits than its factorization.

132784509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309548.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 132784509 is about 11523.2160875339. The cubic root of 132784509 is about 510.1710422071.

The spelling of 132784509 in words is "one hundred thirty-two million, seven hundred eighty-four thousand, five hundred nine".