1181200 has 30 divisors (see below), whose sum is σ = 2838794. Its totient is φ = 472320.

The previous prime is 1181197. The next prime is 1181203. The reversal of 1181200 is 21811.

It is an interprime number because it is at equal distance from previous prime (1181197) and next prime (1181203).

It can be written as a sum of positive squares in 3 ways, for example, as 197136 + 984064 = 444^2 + 992^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1077 + ... + 1876.

2^1181200 is an apocalyptic number.

1181200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1181200 is an abundant number, since it is smaller than the sum of its proper divisors (1657594).

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

1181200 is a wasteful number, since it uses less digits than its factorization.

1181200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971 (or 2960 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1181200 is about 1086.8302535355. The cubic root of 1181200 is about 105.7079894681.

The spelling of 1181200 in words is "one million, one hundred eighty-one thousand, two hundred".