132857128 has 8 divisors (see below), whose sum is σ = 249107130. Its totient is φ = 66428560.

The previous prime is 132857119. The next prime is 132857129. The reversal of 132857128 is 821758231.

132857128 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 79887844 + 52969284 = 8938^2 + 7278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (132857129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8303563 + ... + 8303578.

Almost surely, 2^132857128 is an apocalyptic number.

It is an amenable number.

132857128 is a deficient number, since it is larger than the sum of its proper divisors (116250002).

132857128 is a wasteful number, since it uses less digits than its factorization.

132857128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16607147 (or 16607143 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 132857128 is about 11526.3666434831. The cubic root of 132857128 is about 510.2640283530.

The spelling of 132857128 in words is "one hundred thirty-two million, eight hundred fifty-seven thousand, one hundred twenty-eight".