3938736 has 40 divisors (see below), whose sum is σ = 10507264. Its totient is φ = 1270080.

The previous prime is 3938731. The next prime is 3938743. The reversal of 3938736 is 6378393.

3938736 = T₃₂₅ + T₃₂₆ + ... + T₃₈₆.

It is a junction number, because it is equal to n+sod(n) for n = 3938694 and 3938703.

It is not an unprimeable number, because it can be changed into a prime (3938731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165 + ... + 2811.

Almost surely, 2^3938736 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 3938736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5253632).

3938736 is an abundant number, since it is smaller than the sum of its proper divisors (6568528).

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

3938736 is a wasteful number, since it uses less digits than its factorization.

3938736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689 (or 2683 counting only the distinct ones).

The product of its digits is 81648, while the sum is 39.

The square root of 3938736 is about 1984.6249015872. The cubic root of 3938736 is about 157.9255110075.

The spelling of 3938736 in words is "three million, nine hundred thirty-eight thousand, seven hundred thirty-six".