38648664 has 96 divisors (see below), whose sum is σ = 111044400. Its totient is φ = 12608784.

The previous prime is 38648657. The next prime is 38648669. The reversal of 38648664 is 46684683.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38648669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 822289 + ... + 822335.

Almost surely, 2^38648664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38648664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55522200).

38648664 is an abundant number, since it is smaller than the sum of its proper divisors (72395736).

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

38648664 is an frugal number, since it uses more digits than its factorization.

38648664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 52 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 38648664 is about 6216.8049671837. The cubic root of 38648664 is about 338.0997336489.

The spelling of 38648664 in words is "thirty-eight million, six hundred forty-eight thousand, six hundred sixty-four".