1143487200 has 144 divisors (see below), whose sum is σ = 3733261056. Its totient is φ = 304012800.

The previous prime is 1143487187. The next prime is 1143487231. The reversal of 1143487200 is 27843411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1254745 + ... + 1255655.

It is an arithmetic number, because the mean of its divisors is an integer number (25925424).

Almost surely, 2^1143487200 is an apocalyptic number.

1143487200 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 1143487200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1866630528).

1143487200 is an abundant number, since it is smaller than the sum of its proper divisors (2589773856).

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

1143487200 is a wasteful number, since it uses less digits than its factorization.

1143487200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1143487200 is about 33815.4875759614. The cubic root of 1143487200 is about 1045.7080128280.

The spelling of 1143487200 in words is "one billion, one hundred forty-three million, four hundred eighty-seven thousand, two hundred".