38631966 has 8 divisors (see below), whose sum is σ = 77263944. Its totient is φ = 12877320.

The previous prime is 38631953. The next prime is 38631977. The reversal of 38631966 is 66913683.

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

38631966 is an admirable number.

It is a congruent number.

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, 3219325 + ... + 3219336.

It is an arithmetic number, because the mean of its divisors is an integer number (9657993).

Almost surely, 2^38631966 is an apocalyptic number.

38631966 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.

38631966 is a wasteful number, since it uses less digits than its factorization.

38631966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438666.

The product of its digits is 139968, while the sum is 42.

The square root of 38631966 is about 6215.4618492917. The cubic root of 38631966 is about 338.0510350910.

The spelling of 38631966 in words is "thirty-eight million, six hundred thirty-one thousand, nine hundred sixty-six".