38721298 has 16 divisors (see below), whose sum is σ = 72414144. Its totient is φ = 15086160.

The previous prime is 38721281. The next prime is 38721299. The reversal of 38721298 is 89212783.

38721298 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 38721298.

It is not an unprimeable number, because it can be changed into a prime (38721299) 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 7 ways as a sum of consecutive naturals, for example, 125565 + ... + 125872.

It is an arithmetic number, because the mean of its divisors is an integer number (4525884).

Almost surely, 2^38721298 is an apocalyptic number.

38721298 is a deficient number, since it is larger than the sum of its proper divisors (33692846).

38721298 is a wasteful number, since it uses less digits than its factorization.

38721298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251457.

The product of its digits is 48384, while the sum is 40.

The square root of 38721298 is about 6222.6439718178. The cubic root of 38721298 is about 338.3114026137.

The spelling of 38721298 in words is "thirty-eight million, seven hundred twenty-one thousand, two hundred ninety-eight".