1161330072 has 64 divisors (see below), whose sum is σ = 3320628480. Its totient is φ = 331554432.

The previous prime is 1161329963. The next prime is 1161330073. The reversal of 1161330072 is 2700331611.

It is a super-2 number, since 2×1161330072² = 2697375072263050368, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161330073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390463 + ... + 393425.

It is an arithmetic number, because the mean of its divisors is an integer number (51884820).

Almost surely, 2^1161330072 is an apocalyptic number.

1161330072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1161330072 is an abundant number, since it is smaller than the sum of its proper divisors (2159298408).

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

1161330072 is a wasteful number, since it uses less digits than its factorization.

1161330072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312 (or 5308 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1161330072 is about 34078.2932671224. The cubic root of 1161330072 is about 1051.1190101949.

Adding to 1161330072 its reverse (2700331611), we get a palindrome (3861661683).

The spelling of 1161330072 in words is "one billion, one hundred sixty-one million, three hundred thirty thousand, seventy-two".