1152180220 has 12 divisors (see below), whose sum is σ = 2419578504. Its totient is φ = 460872080.

The previous prime is 1152180209. The next prime is 1152180223. The reversal of 1152180220 is 220812511.

It is a junction number, because it is equal to n+sod(n) for n = 1152180191 and 1152180200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152180223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28804486 + ... + 28804525.

It is an arithmetic number, because the mean of its divisors is an integer number (201631542).

Almost surely, 2^1152180220 is an apocalyptic number.

1152180220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152180220 is an abundant number, since it is smaller than the sum of its proper divisors (1267398284).

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

1152180220 is a wasteful number, since it uses less digits than its factorization.

1152180220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57609020 (or 57609018 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 1152180220 is about 33943.7802844645. The cubic root of 1152180220 is about 1048.3512203441.

Adding to 1152180220 its reverse (220812511), we get a palindrome (1372992731).

The spelling of 1152180220 in words is "one billion, one hundred fifty-two million, one hundred eighty thousand, two hundred twenty".