43820738 has 16 divisors (see below), whose sum is σ = 70990080. Its totient is φ = 20167056.

The previous prime is 43820737. The next prime is 43820801. The reversal of 43820738 is 83702834.

It is a junction number, because it is equal to n+sod(n) for n = 43820698 and 43820707.

It is not an unprimeable number, because it can be changed into a prime (43820737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7631 + ... + 12077.

It is an arithmetic number, because the mean of its divisors is an integer number (4436880).

Almost surely, 2^43820738 is an apocalyptic number.

43820738 is a deficient number, since it is larger than the sum of its proper divisors (27169342).

43820738 is a wasteful number, since it uses less digits than its factorization.

43820738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4841.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 43820738 is about 6619.7234081191. The cubic root of 43820738 is about 352.5547436062.

The spelling of 43820738 in words is "forty-three million, eight hundred twenty thousand, seven hundred thirty-eight".