128232412 has 54 divisors (see below), whose sum is σ = 286986336. Its totient is φ = 49951440.

The previous prime is 128232409. The next prime is 128232421. The reversal of 128232412 is 214232821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21013 + ... + 26419.

Almost surely, 2^128232412 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 128232412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143493168).

128232412 is an abundant number, since it is smaller than the sum of its proper divisors (158753924).

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

128232412 is a wasteful number, since it uses less digits than its factorization.

128232412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447 (or 5427 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 128232412 is about 11323.9750971114. The cubic root of 128232412 is about 504.2732571693.

The spelling of 128232412 in words is "one hundred twenty-eight million, two hundred thirty-two thousand, four hundred twelve".