1117251728 has 10 divisors (see below), whose sum is σ = 2164675254. Its totient is φ = 558625856.

The previous prime is 1117251727. The next prime is 1117251743. The reversal of 1117251728 is 8271527111.

It can be written as a sum of positive squares in only one way, i.e., 1115025664 + 2226064 = 33392^2 + 1492^2 .

It is not an unprimeable number, because it can be changed into a prime (1117251727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34914101 + ... + 34914132.

Almost surely, 2^1117251728 is an apocalyptic number.

It is an amenable number.

1117251728 is a deficient number, since it is larger than the sum of its proper divisors (1047423526).

1117251728 is an equidigital number, since it uses as much as digits as its factorization.

1117251728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69828241 (or 69828235 counting only the distinct ones).

The product of its digits is 7840, while the sum is 35.

The square root of 1117251728 is about 33425.3156753979. The cubic root of 1117251728 is about 1037.6486968952.

Adding to 1117251728 its reverse (8271527111), we get a palindrome (9388778839).

The spelling of 1117251728 in words is "one billion, one hundred seventeen million, two hundred fifty-one thousand, seven hundred twenty-eight".