3006280138 has 4 divisors (see below), whose sum is σ = 4509420210. Its totient is φ = 1503140068.

The previous prime is 3006280127. The next prime is 3006280139. The reversal of 3006280138 is 8310826003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2955770689 + 50509449 = 54367^2 + 7107^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3006280139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 751570033 + ... + 751570036.

Almost surely, 2^3006280138 is an apocalyptic number.

3006280138 is a deficient number, since it is larger than the sum of its proper divisors (1503140072).

3006280138 is a wasteful number, since it uses less digits than its factorization.

3006280138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503140071.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 3006280138 is about 54829.5553328677. Note that the first 3 decimals coincide. The cubic root of 3006280138 is about 1443.2552606844.

The spelling of 3006280138 in words is "three billion, six million, two hundred eighty thousand, one hundred thirty-eight".