38638308 has 12 divisors (see below), whose sum is σ = 90156080. Its totient is φ = 12879432.

The previous prime is 38638283. The next prime is 38638309. The reversal of 38638308 is 80383683.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (38638309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1609918 + ... + 1609941.

Almost surely, 2^38638308 is an apocalyptic number.

It is an amenable number.

38638308 is an abundant number, since it is smaller than the sum of its proper divisors (51517772).

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

38638308 is a wasteful number, since it uses less digits than its factorization.

38638308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219866 (or 3219864 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 38638308 is about 6215.9720076590. The cubic root of 38638308 is about 338.0695327462.

The spelling of 38638308 in words is "thirty-eight million, six hundred thirty-eight thousand, three hundred eight".