128277132 has 48 divisors (see below), whose sum is σ = 325248000. Its totient is φ = 39199680.

The previous prime is 128277089. The next prime is 128277137. The reversal of 128277132 is 231772821.

It is a junction number, because it is equal to n+sod(n) for n = 128277093 and 128277102.

It is not an unprimeable number, because it can be changed into a prime (128277137) 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, 2007 + ... + 16142.

It is an arithmetic number, because the mean of its divisors is an integer number (6776000).

Almost surely, 2^128277132 is an apocalyptic number.

128277132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128277132 is an abundant number, since it is smaller than the sum of its proper divisors (196970868).

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

128277132 is a wasteful number, since it uses less digits than its factorization.

128277132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18206 (or 18204 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 128277132 is about 11325.9494966206. The cubic root of 128277132 is about 504.3318707411.

The spelling of 128277132 in words is "one hundred twenty-eight million, two hundred seventy-seven thousand, one hundred thirty-two".