38666478 has 8 divisors (see below), whose sum is σ = 77332968. Its totient is φ = 12888824.

The previous prime is 38666447. The next prime is 38666479. The reversal of 38666478 is 87466683.

It is a happy number.

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

38666478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38666479) 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 3 ways as a sum of consecutive naturals, for example, 3222201 + ... + 3222212.

It is an arithmetic number, because the mean of its divisors is an integer number (9666621).

Almost surely, 2^38666478 is an apocalyptic number.

38666478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38666478 is a wasteful number, since it uses less digits than its factorization.

38666478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444418.

The product of its digits is 1161216, while the sum is 48.

The square root of 38666478 is about 6218.2375316483. The cubic root of 38666478 is about 338.1516714815.

The spelling of 38666478 in words is "thirty-eight million, six hundred sixty-six thousand, four hundred seventy-eight".