38978071 has 8 divisors (see below), whose sum is σ = 42570000. Its totient is φ = 35394240.

The previous prime is 38978033. The next prime is 38978089. The reversal of 38978071 is 17087983.

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

It is a cyclic number.

It is not a de Polignac number, because 38978071 - 2⁹ = 38977559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38978171) 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 in 7 ways as a sum of consecutive naturals, for example, 12805 + ... + 15553.

It is an arithmetic number, because the mean of its divisors is an integer number (5321250).

Almost surely, 2^38978071 is an apocalyptic number.

38978071 is a deficient number, since it is larger than the sum of its proper divisors (3591929).

38978071 is a wasteful number, since it uses less digits than its factorization.

38978071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 38978071 is about 6243.2420263834. The cubic root of 38978071 is about 339.0575718072.

The spelling of 38978071 in words is "thirty-eight million, nine hundred seventy-eight thousand, seventy-one".