128408232 has 64 divisors (see below), whose sum is σ = 339264000. Its totient is φ = 40388544.

The previous prime is 128408219. The next prime is 128408237. The reversal of 128408232 is 232804821.

It is a self number, because there is not a number n which added to its sum of digits gives 128408232.

It is not an unprimeable number, because it can be changed into a prime (128408237) 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, 172453 + ... + 173195.

It is an arithmetic number, because the mean of its divisors is an integer number (5301000).

Almost surely, 2^128408232 is an apocalyptic number.

128408232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128408232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169632000).

128408232 is an abundant number, since it is smaller than the sum of its proper divisors (210855768).

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

128408232 is a wasteful number, since it uses less digits than its factorization.

128408232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 128408232 is about 11331.7356128706. The cubic root of 128408232 is about 504.5036223118.

The spelling of 128408232 in words is "one hundred twenty-eight million, four hundred eight thousand, two hundred thirty-two".