1117987328 has 20 divisors (see below), whose sum is σ = 2233792110. Its totient is φ = 558993408.

The previous prime is 1117987327. The next prime is 1117987331. The reversal of 1117987328 is 8237897111.

It can be written as a sum of positive squares in only one way, i.e., 980441344 + 137545984 = 31312^2 + 11728^2 .

It is not an unprimeable number, because it can be changed into a prime (1117987327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1091273 + ... + 1092296.

Almost surely, 2^1117987328 is an apocalyptic number.

It is an amenable number.

1117987328 is a deficient number, since it is larger than the sum of its proper divisors (1115804782).

1117987328 is an frugal number, since it uses more digits than its factorization.

1117987328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183587 (or 2183571 counting only the distinct ones).

The product of its digits is 169344, while the sum is 47.

The square root of 1117987328 is about 33436.3175005861. The cubic root of 1117987328 is about 1037.8763766876.

The spelling of 1117987328 in words is "one billion, one hundred seventeen million, nine hundred eighty-seven thousand, three hundred twenty-eight".