43128396 has 48 divisors (see below), whose sum is σ = 112346080. Its totient is φ = 14307840.

The previous prime is 43128389. The next prime is 43128451. The reversal of 43128396 is 69382134.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 43128396.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25200 + ... + 26856.

Almost surely, 2^43128396 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 43128396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56173040).

43128396 is an abundant number, since it is smaller than the sum of its proper divisors (69217684).

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

43128396 is a wasteful number, since it uses less digits than its factorization.

43128396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911 (or 1903 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 43128396 is about 6567.2213302126. The cubic root of 43128396 is about 350.6881590018.

The spelling of 43128396 in words is "forty-three million, one hundred twenty-eight thousand, three hundred ninety-six".