38171972 has 6 divisors (see below), whose sum is σ = 66800958. Its totient is φ = 19085984.

The previous prime is 38171971. The next prime is 38171999. The reversal of 38171972 is 27917183.

It can be written as a sum of positive squares in only one way, i.e., 20666116 + 17505856 = 4546^2 + 4184^2 .

It is not an unprimeable number, because it can be changed into a prime (38171971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4771493 + ... + 4771500.

It is an arithmetic number, because the mean of its divisors is an integer number (11133493).

Almost surely, 2^38171972 is an apocalyptic number.

It is an amenable number.

38171972 is a deficient number, since it is larger than the sum of its proper divisors (28628986).

38171972 is a wasteful number, since it uses less digits than its factorization.

38171972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9542997 (or 9542995 counting only the distinct ones).

The product of its digits is 21168, while the sum is 38.

The square root of 38171972 is about 6178.3470281298. The cubic root of 38171972 is about 336.7039403666.

The spelling of 38171972 in words is "thirty-eight million, one hundred seventy-one thousand, nine hundred seventy-two".