38709216 has 216 divisors, whose sum is σ = 138555144. Its totient is φ = 10160640.

The previous prime is 38709211. The next prime is 38709217. The reversal of 38709216 is 61290783.

38709216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38709211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 183351 + ... + 183561.

It is an arithmetic number, because the mean of its divisors is an integer number (641459).

Almost surely, 2^38709216 is an apocalyptic number.

38709216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38709216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69277572).

38709216 is an abundant number, since it is smaller than the sum of its proper divisors (99845928).

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

38709216 is a wasteful number, since it uses less digits than its factorization.

38709216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 38709216 is about 6221.6730868794. The cubic root of 38709216 is about 338.2762117861.

Adding to 38709216 its reverse (61290783), we get a palindrome (99999999).

The spelling of 38709216 in words is "thirty-eight million, seven hundred nine thousand, two hundred sixteen".