128667032 has 32 divisors (see below), whose sum is σ = 261156000. Its totient is φ = 59076864.

The previous prime is 128667029. The next prime is 128667043. The reversal of 128667032 is 230766821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 128666983 and 128667001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17588 + ... + 23804.

It is an arithmetic number, because the mean of its divisors is an integer number (8161125).

Almost surely, 2^128667032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128667032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130578000).

128667032 is an abundant number, since it is smaller than the sum of its proper divisors (132488968).

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

128667032 is a wasteful number, since it uses less digits than its factorization.

128667032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6435 (or 6431 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 128667032 is about 11343.1491218268. The cubic root of 128667032 is about 504.8423283214.

The spelling of 128667032 in words is "one hundred twenty-eight million, six hundred sixty-seven thousand, thirty-two".