38440038 has 64 divisors (see below), whose sum is σ = 98767872. Its totient is φ = 9694080.

The previous prime is 38440027. The next prime is 38440067. The reversal of 38440038 is 83004483.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38439987 and 38440014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11028 + ... + 14088.

It is an arithmetic number, because the mean of its divisors is an integer number (1543248).

Almost surely, 2^38440038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38440038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49383936).

38440038 is an abundant number, since it is smaller than the sum of its proper divisors (60327834).

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

38440038 is a wasteful number, since it uses less digits than its factorization.

38440038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 38440038 is about 6200.0030645154. The cubic root of 38440038 is about 337.4902801042.

The spelling of 38440038 in words is "thirty-eight million, four hundred forty thousand, thirty-eight".