1117561272 has 32 divisors (see below), whose sum is σ = 2862049680. Its totient is φ = 363434240.

The previous prime is 1117561259. The next prime is 1117561327. The reversal of 1117561272 is 2721657111.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 566883 + ... + 568850.

Almost surely, 2^1117561272 is an apocalyptic number.

1117561272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1117561272 is an abundant number, since it is smaller than the sum of its proper divisors (1744488408).

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

1117561272 is a wasteful number, since it uses less digits than its factorization.

1117561272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135783 (or 1135779 counting only the distinct ones).

The product of its digits is 5880, while the sum is 33.

The square root of 1117561272 is about 33429.9457373176. The cubic root of 1117561272 is about 1037.7445178163.

The spelling of 1117561272 in words is "one billion, one hundred seventeen million, five hundred sixty-one thousand, two hundred seventy-two".