3800030728 has 16 divisors (see below), whose sum is σ = 7673139180. Its totient is φ = 1753860288.

The previous prime is 3800030719. The next prime is 3800030737. The reversal of 3800030728 is 8270300083.

It is an interprime number because it is at equal distance from previous prime (3800030719) and next prime (3800030737).

It can be written as a sum of positive squares in 2 ways, for example, as 3469445604 + 330585124 = 58902^2 + 18182^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3800030728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18269275 + ... + 18269482.

Almost surely, 2^3800030728 is an apocalyptic number.

It is an amenable number.

3800030728 is an abundant number, since it is smaller than the sum of its proper divisors (3873108452).

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

3800030728 is a wasteful number, since it uses less digits than its factorization.

3800030728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36538776 (or 36538772 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 3800030728 is about 61644.3892661773. The cubic root of 3800030728 is about 1560.4949569035.

The spelling of 3800030728 in words is "three billion, eight hundred million, thirty thousand, seven hundred twenty-eight".