43428223 has 4 divisors (see below), whose sum is σ = 43461360. Its totient is φ = 43395088.

The previous prime is 43428191. The next prime is 43428233. The reversal of 43428223 is 32282434.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43428223 - 2⁵ = 43428191 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 43428191 and 43428200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43428233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14518 + ... + 17251.

It is an arithmetic number, because the mean of its divisors is an integer number (10865340).

Almost surely, 2^43428223 is an apocalyptic number.

43428223 is a deficient number, since it is larger than the sum of its proper divisors (33137).

43428223 is a wasteful number, since it uses less digits than its factorization.

43428223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33136.

The product of its digits is 9216, while the sum is 28.

The square root of 43428223 is about 6590.0093323151. The cubic root of 43428223 is about 351.4989400539.

The spelling of 43428223 in words is "forty-three million, four hundred twenty-eight thousand, two hundred twenty-three".