1173128706 has 24 divisors (see below), whose sum is σ = 2629427580. Its totient is φ = 377558496.

The previous prime is 1173128689. The next prime is 1173128713. The reversal of 1173128706 is 6078213711.

It can be written as a sum of positive squares in 2 ways, for example, as 1170255681 + 2873025 = 34209^2 + 1695^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1123165 + ... + 1124208.

Almost surely, 2^1173128706 is an apocalyptic number.

1173128706 is an abundant number, since it is smaller than the sum of its proper divisors (1456298874).

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

1173128706 is a wasteful number, since it uses less digits than its factorization.

1173128706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247410 (or 2247407 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1173128706 is about 34250.9664973122. The cubic root of 1173128706 is about 1054.6666679764. Note that the first 5 decimals are identical.

The spelling of 1173128706 in words is "one billion, one hundred seventy-three million, one hundred twenty-eight thousand, seven hundred six".