43428366 has 64 divisors (see below), whose sum is σ = 100742400. Its totient is φ = 13855968.

The previous prime is 43428317. The next prime is 43428373. The reversal of 43428366 is 66382434.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 43428366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136840 + ... + 137156.

It is an arithmetic number, because the mean of its divisors is an integer number (1574100).

Almost surely, 2^43428366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43428366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50371200).

43428366 is an abundant number, since it is smaller than the sum of its proper divisors (57314034).

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

43428366 is a wasteful number, since it uses less digits than its factorization.

43428366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 424 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 43428366 is about 6590.0201820632. The cubic root of 43428366 is about 351.4993258575.

The spelling of 43428366 in words is "forty-three million, four hundred twenty-eight thousand, three hundred sixty-six".