43428065 has 16 divisors (see below), whose sum is σ = 54075648. Its totient is φ = 33457536.

The previous prime is 43428037. The next prime is 43428079. The reversal of 43428065 is 56082434.

It is a cyclic number.

It is not a de Polignac number, because 43428065 - 2⁶ = 43428001 is a prime.

It is a Duffinian number.

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, 14312 + ... + 17078.

It is an arithmetic number, because the mean of its divisors is an integer number (3379728).

Almost surely, 2^43428065 is an apocalyptic number.

It is an amenable number.

43428065 is a deficient number, since it is larger than the sum of its proper divisors (10647583).

43428065 is a wasteful number, since it uses less digits than its factorization.

43428065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 43428065 is about 6589.9973444608. The cubic root of 43428065 is about 351.4985137804.

The spelling of 43428065 in words is "forty-three million, four hundred twenty-eight thousand, sixty-five".