1161728152 has 32 divisors (see below), whose sum is σ = 2359879200. Its totient is φ = 532963584.

The previous prime is 1161728143. The next prime is 1161728171. The reversal of 1161728152 is 2518271611.

It is a super-2 number, since 2×1161728152² = 2699224598298670208, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 16077 + ... + 50812.

It is an arithmetic number, because the mean of its divisors is an integer number (73746225).

Almost surely, 2^1161728152 is an apocalyptic number.

It is an amenable number.

1161728152 is an abundant number, since it is smaller than the sum of its proper divisors (1198151048).

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

1161728152 is a wasteful number, since it uses less digits than its factorization.

1161728152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67075 (or 67071 counting only the distinct ones).

The product of its digits is 6720, while the sum is 34.

The square root of 1161728152 is about 34084.1334347816. The cubic root of 1161728152 is about 1051.2390971151.

Adding to 1161728152 its reverse (2518271611), we get a palindrome (3679999763).

The spelling of 1161728152 in words is "one billion, one hundred sixty-one million, seven hundred twenty-eight thousand, one hundred fifty-two".