1161428076 has 144 divisors (see below), whose sum is σ = 3159505440. Its totient is φ = 359009280.

The previous prime is 1161428071. The next prime is 1161428077. The reversal of 1161428076 is 6708241611.

It is a happy number.

1161428076 is a `hidden beast` number, since 1 + 161 + 428 + 0 + 76 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1161428076.

It is not an unprimeable number, because it can be changed into a prime (1161428071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4133056 + ... + 4133336.

It is an arithmetic number, because the mean of its divisors is an integer number (21941010).

Almost surely, 2^1161428076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161428076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579752720).

1161428076 is an abundant number, since it is smaller than the sum of its proper divisors (1998077364).

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

1161428076 is a wasteful number, since it uses less digits than its factorization.

1161428076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1161428076 is about 34079.7311609115. The cubic root of 1161428076 is about 1051.1485771465.

Adding to 1161428076 its reverse (6708241611), we get a palindrome (7869669687).

The spelling of 1161428076 in words is "one billion, one hundred sixty-one million, four hundred twenty-eight thousand, seventy-six".