1161047628 has 48 divisors (see below), whose sum is σ = 3241675360. Its totient is φ = 357244992.

The previous prime is 1161047609. The next prime is 1161047639. The reversal of 1161047628 is 8267401611.

It is a happy number.

1161047628 is a `hidden beast` number, since 1 + 16 + 10 + 4 + 7 + 628 = 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 = 1161047592 and 1161047601.

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 15 ways as a sum of consecutive naturals, for example, 412075 + ... + 414882.

Almost surely, 2^1161047628 is an apocalyptic number.

1161047628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1161047628 is an abundant number, since it is smaller than the sum of its proper divisors (2080627732).

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

1161047628 is a wasteful number, since it uses less digits than its factorization.

1161047628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826983 (or 826975 counting only the distinct ones).

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

The square root of 1161047628 is about 34074.1489695634. The cubic root of 1161047628 is about 1051.0337899990.

The spelling of 1161047628 in words is "one billion, one hundred sixty-one million, forty-seven thousand, six hundred twenty-eight".