43672013 has 16 divisors (see below), whose sum is σ = 57315840. Its totient is φ = 32238000.

The previous prime is 43672001. The next prime is 43672021. The reversal of 43672013 is 31027634.

43672013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43672013 - 2⁸ = 43671757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43672063) 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, 13463 + ... + 16388.

It is an arithmetic number, because the mean of its divisors is an integer number (3582240).

Almost surely, 2^43672013 is an apocalyptic number.

It is an amenable number.

43672013 is a deficient number, since it is larger than the sum of its proper divisors (13643827).

43672013 is a wasteful number, since it uses less digits than its factorization.

43672013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29888.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 43672013 is about 6608.4803850810. The cubic root of 43672013 is about 352.1554415276.

Adding to 43672013 its reverse (31027634), we get a palindrome (74699647).

The spelling of 43672013 in words is "forty-three million, six hundred seventy-two thousand, thirteen".