38644648 has 32 divisors (see below), whose sum is σ = 83266560. Its totient is φ = 16470720.

The previous prime is 38644633. The next prime is 38644699. The reversal of 38644648 is 84644683.

38644648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8890 + ... + 12502.

It is an arithmetic number, because the mean of its divisors is an integer number (2602080).

Almost surely, 2^38644648 is an apocalyptic number.

It is an amenable number.

38644648 is an abundant number, since it is smaller than the sum of its proper divisors (44621912).

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

38644648 is a wasteful number, since it uses less digits than its factorization.

38644648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817 (or 3813 counting only the distinct ones).

The product of its digits is 442368, while the sum is 43.

The square root of 38644648 is about 6216.4819632972. The cubic root of 38644648 is about 338.0880225450.

The spelling of 38644648 in words is "thirty-eight million, six hundred forty-four thousand, six hundred forty-eight".