1161206028 has 18 divisors (see below), whose sum is σ = 2935270884. Its totient is φ = 387068664.

The previous prime is 1161206027. The next prime is 1161206041. The reversal of 1161206028 is 8206021611.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 1161205992 and 1161206010.

It is not an unprimeable number, because it can be changed into a prime (1161206027) 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 in 5 ways as a sum of consecutive naturals, for example, 16127826 + ... + 16127897.

Almost surely, 2^1161206028 is an apocalyptic number.

1161206028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1161206028 is an abundant number, since it is smaller than the sum of its proper divisors (1774064856).

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

1161206028 is a wasteful number, since it uses less digits than its factorization.

1161206028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32255733 (or 32255728 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1161206028 is about 34076.4732330093. The cubic root of 1161206028 is about 1051.0815848175.

Adding to 1161206028 its reverse (8206021611), we get a palindrome (9367227639).

The spelling of 1161206028 in words is "one billion, one hundred sixty-one million, two hundred six thousand, twenty-eight".