1171761228 has 60 divisors (see below), whose sum is σ = 3341699592. Its totient is φ = 355078080.

The previous prime is 1171761163. The next prime is 1171761229. The reversal of 1171761228 is 8221671711.

1171761228 is a `hidden beast` number, since 1 + 1 + 7 + 17 + 612 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1171761192 and 1171761201.

It is not an unprimeable number, because it can be changed into a prime (1171761229) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 160825 + ... + 167952.

Almost surely, 2^1171761228 is an apocalyptic number.

1171761228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1171761228 is an abundant number, since it is smaller than the sum of its proper divisors (2169938364).

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

1171761228 is a wasteful number, since it uses less digits than its factorization.

1171761228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328804 (or 328793 counting only the distinct ones).

The product of its digits is 9408, while the sum is 36.

The square root of 1171761228 is about 34230.9980573164. The cubic root of 1171761228 is about 1054.2567117599.

The spelling of 1171761228 in words is "one billion, one hundred seventy-one million, seven hundred sixty-one thousand, two hundred twenty-eight".