3838888720 has 40 divisors (see below), whose sum is σ = 9213338880. Its totient is φ = 1486020480.

The previous prime is 3838888667. The next prime is 3838888721. The reversal of 3838888720 is 278888383.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3838888721) 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 7 ways as a sum of consecutive naturals, for example, 771490 + ... + 776449.

It is an arithmetic number, because the mean of its divisors is an integer number (230333472).

Almost surely, 2^3838888720 is an apocalyptic number.

It is an amenable number.

3838888720 is an abundant number, since it is smaller than the sum of its proper divisors (5374450160).

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

3838888720 is a wasteful number, since it uses less digits than its factorization.

3838888720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547983 (or 1547977 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 55.

The square root of 3838888720 is about 61958.7662885568. The cubic root of 3838888720 is about 1565.7959823754.

The spelling of 3838888720 in words is "three billion, eight hundred thirty-eight million, eight hundred eighty-eight thousand, seven hundred twenty".