43428057 has 4 divisors (see below), whose sum is σ = 57904080. Its totient is φ = 28952036.

The previous prime is 43428037. The next prime is 43428079. The reversal of 43428057 is 75082434.

43428057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43428057 - 2¹⁴ = 43411673 is a prime.

It is a super-2 number, since 2×43428057² = 3771992269590498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43428037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7238007 + ... + 7238012.

It is an arithmetic number, because the mean of its divisors is an integer number (14476020).

Almost surely, 2^43428057 is an apocalyptic number.

It is an amenable number.

43428057 is a deficient number, since it is larger than the sum of its proper divisors (14476023).

43428057 is a wasteful number, since it uses less digits than its factorization.

43428057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14476022.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 43428057 is about 6589.9967374802. The cubic root of 43428057 is about 351.4984921969.

The spelling of 43428057 in words is "forty-three million, four hundred twenty-eight thousand, fifty-seven".