38390706 has 32 divisors (see below), whose sum is σ = 86169600. Its totient is φ = 12668400.

The previous prime is 38390699. The next prime is 38390707. The reversal of 38390706 is 60709383.

38390706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (38390707) 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 15 ways as a sum of consecutive naturals, for example, 1935 + ... + 8973.

It is an arithmetic number, because the mean of its divisors is an integer number (2692800).

Almost surely, 2^38390706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38390706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43084800).

38390706 is an abundant number, since it is smaller than the sum of its proper divisors (47778894).

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

38390706 is a wasteful number, since it uses less digits than its factorization.

38390706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7151 (or 7145 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 38390706 is about 6196.0234021508. The cubic root of 38390706 is about 337.3458456495.

The spelling of 38390706 in words is "thirty-eight million, three hundred ninety thousand, seven hundred six".