1161047040 has 176 divisors, whose sum is σ = 3740605920. Its totient is φ = 307363840.

The previous prime is 1161047009. The next prime is 1161047093. The reversal of 1161047040 is 407401611.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1161047040.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4131700 + ... + 4131980.

Almost surely, 2^1161047040 is an apocalyptic number.

1161047040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161047040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870302960).

1161047040 is an abundant number, since it is smaller than the sum of its proper divisors (2579558880).

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

1161047040 is a wasteful number, since it uses less digits than its factorization.

1161047040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1161047040 is about 34074.1403413204. The cubic root of 1161047040 is about 1051.0336125707.

Adding to 1161047040 its reverse (407401611), we get a palindrome (1568448651).

The spelling of 1161047040 in words is "one billion, one hundred sixty-one million, forty-seven thousand, forty".