38705243 has 4 divisors (see below), whose sum is σ = 40982040. Its totient is φ = 36428448.

The previous prime is 38705201. The next prime is 38705263. The reversal of 38705243 is 34250783.

It is a happy number.

38705243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38705243 - 2¹⁶ = 38639707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38705263) 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 3 ways as a sum of consecutive naturals, for example, 1138373 + ... + 1138406.

It is an arithmetic number, because the mean of its divisors is an integer number (10245510).

Almost surely, 2^38705243 is an apocalyptic number.

38705243 is a deficient number, since it is larger than the sum of its proper divisors (2276797).

38705243 is a wasteful number, since it uses less digits than its factorization.

38705243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276796.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 38705243 is about 6221.3537915795. The cubic root of 38705243 is about 338.2646381652.

The spelling of 38705243 in words is "thirty-eight million, seven hundred five thousand, two hundred forty-three".