38943738 has 48 divisors (see below), whose sum is σ = 88957440. Its totient is φ = 12288672.

The previous prime is 38943701. The next prime is 38943739. The reversal of 38943738 is 83734983.

It is a happy number.

It is a super-2 number, since 2×38943738² = 3033229458825288, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38943693 and 38943702.

It is not an unprimeable number, because it can be changed into a prime (38943739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44695 + ... + 45557.

It is an arithmetic number, because the mean of its divisors is an integer number (1853280).

Almost surely, 2^38943738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38943738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44478720).

38943738 is an abundant number, since it is smaller than the sum of its proper divisors (50013702).

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

38943738 is a wasteful number, since it uses less digits than its factorization.

38943738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 1000 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 38943738 is about 6240.4918075421. The cubic root of 38943738 is about 338.9579920276.

The spelling of 38943738 in words is "thirty-eight million, nine hundred forty-three thousand, seven hundred thirty-eight".