38478381 has 8 divisors (see below), whose sum is σ = 51346560. Its totient is φ = 25631232.

The previous prime is 38478367. The next prime is 38478403. The reversal of 38478381 is 18387483.

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

It is not a de Polignac number, because 38478381 - 2¹⁰ = 38477357 is a prime.

It is a super-2 number, since 2×38478381² = 2961171608762322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38478481) 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, 325 + ... + 8778.

It is an arithmetic number, because the mean of its divisors is an integer number (6418320).

Almost surely, 2^38478381 is an apocalyptic number.

It is an amenable number.

38478381 is a deficient number, since it is larger than the sum of its proper divisors (12868179).

38478381 is a wasteful number, since it uses less digits than its factorization.

38478381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515.

The product of its digits is 129024, while the sum is 42.

The square root of 38478381 is about 6203.0944696982. The cubic root of 38478381 is about 337.6024555883.

The spelling of 38478381 in words is "thirty-eight million, four hundred seventy-eight thousand, three hundred eighty-one".