38663978 has 8 divisors (see below), whose sum is σ = 58091520. Its totient is φ = 19300140.

The previous prime is 38663969. The next prime is 38663981. The reversal of 38663978 is 87936683.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14378 + ... + 16853.

It is an arithmetic number, because the mean of its divisors is an integer number (7261440).

Almost surely, 2^38663978 is an apocalyptic number.

38663978 is a deficient number, since it is larger than the sum of its proper divisors (19427542).

38663978 is a wasteful number, since it uses less digits than its factorization.

38663978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31852.

The product of its digits is 1306368, while the sum is 50.

The square root of 38663978 is about 6218.0365068082. The cubic root of 38663978 is about 338.1443835374.

The spelling of 38663978 in words is "thirty-eight million, six hundred sixty-three thousand, nine hundred seventy-eight".