38686648 has 64 divisors (see below), whose sum is σ = 97413120. Its totient is φ = 13910400.

The previous prime is 38686631. The next prime is 38686673. The reversal of 38686648 is 84668683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5593 + ... + 10423.

It is an arithmetic number, because the mean of its divisors is an integer number (1522080).

Almost surely, 2^38686648 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 38686648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48706560).

38686648 is an abundant number, since it is smaller than the sum of its proper divisors (58726472).

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

38686648 is a wasteful number, since it uses less digits than its factorization.

38686648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868 (or 4864 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 49.

The square root of 38686648 is about 6219.8591623927. The cubic root of 38686648 is about 338.2104591270.

It can be divided in two parts, 38 and 686648, that added together give a palindrome (686686).

The spelling of 38686648 in words is "thirty-eight million, six hundred eighty-six thousand, six hundred forty-eight".