1155320200 has 24 divisors (see below), whose sum is σ = 2686119930. Its totient is φ = 462128000.

The previous prime is 1155320197. The next prime is 1155320209. The reversal of 1155320200 is 20235511.

It can be written as a sum of positive squares in 3 ways, for example, as 416241604 + 739078596 = 20402^2 + 27186^2 .

It is not an unprimeable number, because it can be changed into a prime (1155320209) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2888101 + ... + 2888500.

Almost surely, 2^1155320200 is an apocalyptic number.

1155320200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155320200 is an abundant number, since it is smaller than the sum of its proper divisors (1530799730).

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

1155320200 is a wasteful number, since it uses less digits than its factorization.

1155320200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776617 (or 5776608 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1155320200 is about 33990.0014710209. The cubic root of 1155320200 is about 1049.3026965103.

Adding to 1155320200 its reverse (20235511), we get a palindrome (1175555711).

The spelling of 1155320200 in words is "one billion, one hundred fifty-five million, three hundred twenty thousand, two hundred".