38203947 has 16 divisors (see below), whose sum is σ = 59928480. Its totient is φ = 23970816.

The previous prime is 38203931. The next prime is 38203951. The reversal of 38203947 is 74930283.

38203947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38203947 - 2⁴ = 38203931 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (38203967) 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 15 ways as a sum of consecutive naturals, for example, 41158 + ... + 42075.

It is an arithmetic number, because the mean of its divisors is an integer number (3745530).

Almost surely, 2^38203947 is an apocalyptic number.

38203947 is a deficient number, since it is larger than the sum of its proper divisors (21724533).

38203947 is a wasteful number, since it uses less digits than its factorization.

38203947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83259 (or 83253 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 38203947 is about 6180.9341526989. The cubic root of 38203947 is about 336.7979282083.

The spelling of 38203947 in words is "thirty-eight million, two hundred three thousand, nine hundred forty-seven".