38685712 has 40 divisors (see below), whose sum is σ = 82069400. Its totient is φ = 17556480.

The previous prime is 38685677. The next prime is 38685721. The reversal of 38685712 is 21758683.

It can be written as a sum of positive squares in 4 ways, for example, as 4064256 + 34621456 = 2016^2 + 5884^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11164 + ... + 14212.

It is an arithmetic number, because the mean of its divisors is an integer number (2051735).

Almost surely, 2^38685712 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 38685712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41034700).

38685712 is an abundant number, since it is smaller than the sum of its proper divisors (43383688).

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

38685712 is a wasteful number, since it uses less digits than its factorization.

38685712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131 (or 3125 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 38685712 is about 6219.7839190763. The cubic root of 38685712 is about 338.2077315060.

The spelling of 38685712 in words is "thirty-eight million, six hundred eighty-five thousand, seven hundred twelve".