43680538 has 16 divisors (see below), whose sum is σ = 71682336. Its totient is φ = 19797840.

The previous prime is 43680521. The next prime is 43680547. The reversal of 43680538 is 83508634.

It is a junction number, because it is equal to n+sod(n) for n = 43680497 and 43680506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5545 + ... + 10867.

It is an arithmetic number, because the mean of its divisors is an integer number (4480146).

Almost surely, 2^43680538 is an apocalyptic number.

43680538 is a deficient number, since it is larger than the sum of its proper divisors (28001798).

43680538 is a wasteful number, since it uses less digits than its factorization.

43680538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 43680538 is about 6609.1253581696. The cubic root of 43680538 is about 352.1783542170.

The spelling of 43680538 in words is "forty-three million, six hundred eighty thousand, five hundred thirty-eight".