38709816 has 48 divisors (see below), whose sum is σ = 102820440. Its totient is φ = 12142080.

The previous prime is 38709773. The next prime is 38709823. The reversal of 38709816 is 61890783.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4146 + ... + 9726.

Almost surely, 2^38709816 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 38709816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51410220).

38709816 is an abundant number, since it is smaller than the sum of its proper divisors (64110624).

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

38709816 is a wasteful number, since it uses less digits than its factorization.

38709816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5624 (or 5603 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 38709816 is about 6221.7213052338. The cubic root of 38709816 is about 338.2779595583.

The spelling of 38709816 in words is "thirty-eight million, seven hundred nine thousand, eight hundred sixteen".