43730643 has 16 divisors (see below), whose sum is σ = 63827712. Its totient is φ = 26412000.

The previous prime is 43730639. The next prime is 43730663. The reversal of 43730643 is 34603734.

It is not a de Polignac number, because 43730643 - 2² = 43730639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43730643.

It is not an unprimeable number, because it can be changed into a prime (43730663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8133 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (3989232).

Almost surely, 2^43730643 is an apocalyptic number.

43730643 is a deficient number, since it is larger than the sum of its proper divisors (20097069).

43730643 is a wasteful number, since it uses less digits than its factorization.

43730643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586.

The product of its (nonzero) digits is 18144, while the sum is 30.

The square root of 43730643 is about 6612.9148641125. The cubic root of 43730643 is about 352.3129614851.

The spelling of 43730643 in words is "forty-three million, seven hundred thirty thousand, six hundred forty-three".