1185428200 has 96 divisors (see below), whose sum is σ = 3088150560. Its totient is φ = 419385600.

The previous prime is 1185428159. The next prime is 1185428201. The reversal of 1185428200 is 28245811.

It is not an unprimeable number, because it can be changed into a prime (1185428201) 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 23 ways as a sum of consecutive naturals, for example, 74119 + ... + 88681.

It is an arithmetic number, because the mean of its divisors is an integer number (32168235).

Almost surely, 2^1185428200 is an apocalyptic number.

1185428200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1185428200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544075280).

1185428200 is an abundant number, since it is smaller than the sum of its proper divisors (1902722360).

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

1185428200 is a wasteful number, since it uses less digits than its factorization.

1185428200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14627 (or 14618 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 1185428200 is about 34430.0479232893. The cubic root of 1185428200 is about 1058.3396934056.

The spelling of 1185428200 in words is "one billion, one hundred eighty-five million, four hundred twenty-eight thousand, two hundred".