7028117906 has 4 divisors (see below), whose sum is σ = 10542176862. Its totient is φ = 3514058952.

The previous prime is 7028117903. The next prime is 7028117909. The reversal of 7028117906 is 6097118207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6097118207 = 101 ⋅60367507.

It is an interprime number because it is at equal distance from previous prime (7028117903) and next prime (7028117909).

It can be written as a sum of positive squares in only one way, i.e., 4182855625 + 2845262281 = 64675^2 + 53341^2 .

It is not an unprimeable number, because it can be changed into a prime (7028117903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1757029475 + ... + 1757029478.

Almost surely, 2^7028117906 is an apocalyptic number.

7028117906 is a deficient number, since it is larger than the sum of its proper divisors (3514058956).

7028117906 is a wasteful number, since it uses less digits than its factorization.

7028117906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514058955.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 7028117906 is about 83833.8708756789. The cubic root of 7028117906 is about 1915.4890761366.

The spelling of 7028117906 in words is "seven billion, twenty-eight million, one hundred seventeen thousand, nine hundred six".