132728161 has 2 divisors, whose sum is σ = 132728162. Its totient is φ = 132728160.

The previous prime is 132728153. The next prime is 132728173. The reversal of 132728161 is 161827231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115347600 + 17380561 = 10740^2 + 4169^2 .

It is a cyclic number.

It is not a de Polignac number, because 132728161 - 2³ = 132728153 is a prime.

It is not a weakly prime, because it can be changed into another prime (132728191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66364080 + 66364081.

It is an arithmetic number, because the mean of its divisors is an integer number (66364081).

Almost surely, 2^132728161 is an apocalyptic number.

It is an amenable number.

132728161 is a deficient number, since it is larger than the sum of its proper divisors (1).

132728161 is an equidigital number, since it uses as much as digits as its factorization.

132728161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 132728161 is about 11520.7708509457. The cubic root of 132728161 is about 510.0988671584.

The spelling of 132728161 in words is "one hundred thirty-two million, seven hundred twenty-eight thousand, one hundred sixty-one".