43428805 has 16 divisors (see below), whose sum is σ = 61614720. Its totient is φ = 28752192.

The previous prime is 43428757. The next prime is 43428809. The reversal of 43428805 is 50882434.

It is not a de Polignac number, because 43428805 - 2⁹ = 43428293 is a prime.

It is a super-2 number, since 2×43428805² = 3772122207456050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43428809) 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, 20379 + ... + 22408.

It is an arithmetic number, because the mean of its divisors is an integer number (3850920).

Almost surely, 2^43428805 is an apocalyptic number.

It is an amenable number.

43428805 is a deficient number, since it is larger than the sum of its proper divisors (18185915).

43428805 is a wasteful number, since it uses less digits than its factorization.

43428805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42828.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 43428805 is about 6590.0534899195. The cubic root of 43428805 is about 351.5005102422.

The spelling of 43428805 in words is "forty-three million, four hundred twenty-eight thousand, eight hundred five".