38815684 has 12 divisors (see below), whose sum is σ = 69584508. Its totient is φ = 18934400.

The previous prime is 38815681. The next prime is 38815691. The reversal of 38815684 is 48651883.

It can be written as a sum of positive squares in 2 ways, for example, as 2815684 + 36000000 = 1678^2 + 6000^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38815684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38815681) 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, 118177 + ... + 118504.

It is an arithmetic number, because the mean of its divisors is an integer number (5798709).

Almost surely, 2^38815684 is an apocalyptic number.

It is an amenable number.

38815684 is a deficient number, since it is larger than the sum of its proper divisors (30768824).

38815684 is a wasteful number, since it uses less digits than its factorization.

38815684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236726 (or 236724 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 38815684 is about 6230.2234309854. The cubic root of 38815684 is about 338.5860658384.

The spelling of 38815684 in words is "thirty-eight million, eight hundred fifteen thousand, six hundred eighty-four".