7128027506 has 4 divisors (see below), whose sum is σ = 10692041262. Its totient is φ = 3564013752.

The previous prime is 7128027481. The next prime is 7128027509. The reversal of 7128027506 is 6057208217.

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., 3889393225 + 3238634281 = 62365^2 + 56909^2 .

It is a super-2 number, since 2×7128027506² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7128027506.

It is not an unprimeable number, because it can be changed into a prime (7128027509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1782006875 + ... + 1782006878.

Almost surely, 2^7128027506 is an apocalyptic number.

7128027506 is a deficient number, since it is larger than the sum of its proper divisors (3564013756).

7128027506 is a wasteful number, since it uses less digits than its factorization.

7128027506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564013755.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 7128027506 is about 84427.6465738564. The cubic root of 7128027506 is about 1924.5230734836.

The spelling of 7128027506 in words is "seven billion, one hundred twenty-eight million, twenty-seven thousand, five hundred six".