43728738 has 8 divisors (see below), whose sum is σ = 87457488. Its totient is φ = 14576244.

The previous prime is 43728733. The next prime is 43728749. The reversal of 43728738 is 83782734.

It is a sphenic number, since it is the product of 3 distinct primes.

43728738 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 43728738.

It is not an unprimeable number, because it can be changed into a prime (43728733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3644056 + ... + 3644067.

It is an arithmetic number, because the mean of its divisors is an integer number (10932186).

Almost surely, 2^43728738 is an apocalyptic number.

43728738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43728738 is a wasteful number, since it uses less digits than its factorization.

43728738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7288128.

The product of its digits is 225792, while the sum is 42.

The square root of 43728738 is about 6612.7708262120. The cubic root of 43728738 is about 352.3078455763.

The spelling of 43728738 in words is "forty-three million, seven hundred twenty-eight thousand, seven hundred thirty-eight".