38684856 has 64 divisors (see below), whose sum is σ = 110995200. Its totient is φ = 11006208.

The previous prime is 38684851. The next prime is 38684857. The reversal of 38684856 is 65848683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38684851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68431 + ... + 68993.

It is an arithmetic number, because the mean of its divisors is an integer number (1734300).

Almost surely, 2^38684856 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 38684856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55497600).

38684856 is an abundant number, since it is smaller than the sum of its proper divisors (72310344).

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

38684856 is a wasteful number, since it uses less digits than its factorization.

38684856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 984 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 48.

The square root of 38684856 is about 6219.7151060157. The cubic root of 38684856 is about 338.2052369765.

The spelling of 38684856 in words is "thirty-eight million, six hundred eighty-four thousand, eight hundred fifty-six".