43628739 has 16 divisors (see below), whose sum is σ = 72526080. Its totient is φ = 22664160.

The previous prime is 43628729. The next prime is 43628747. The reversal of 43628739 is 93782634.

43628739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43628739 - 2⁵ = 43628707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43628739.

It is not an unprimeable number, because it can be changed into a prime (43628729) 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 15 ways as a sum of consecutive naturals, for example, 94204 + ... + 94665.

It is an arithmetic number, because the mean of its divisors is an integer number (4532880).

Almost surely, 2^43628739 is an apocalyptic number.

43628739 is a deficient number, since it is larger than the sum of its proper divisors (28897341).

43628739 is a wasteful number, since it uses less digits than its factorization.

43628739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188890.

The product of its digits is 217728, while the sum is 42.

The square root of 43628739 is about 6605.2054472212. The cubic root of 43628739 is about 352.0390877522.

The spelling of 43628739 in words is "forty-three million, six hundred twenty-eight thousand, seven hundred thirty-nine".