3850000728 has 128 divisors (see below), whose sum is σ = 11636352000. Its totient is φ = 1037684736.

The previous prime is 3850000697. The next prime is 3850000729. The reversal of 3850000728 is 8270000583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3850000729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275248 + ... + 288896.

It is an arithmetic number, because the mean of its divisors is an integer number (90909000).

Almost surely, 2^3850000728 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 3850000728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5818176000).

3850000728 is an abundant number, since it is smaller than the sum of its proper divisors (7786351272).

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

3850000728 is a wasteful number, since it uses less digits than its factorization.

3850000728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13761 (or 13757 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 3850000728 is about 62048.3740963452. The cubic root of 3850000728 is about 1567.3053060284.

The spelling of 3850000728 in words is "three billion, eight hundred fifty million, seven hundred twenty-eight", and thus it is an aban number.