1143998208 has 288 divisors, whose sum is σ = 3689011200. Its totient is φ = 348364800.

The previous prime is 1143998203. The next prime is 1143998243. The reversal of 1143998208 is 8028993411.

1143998208 is a `hidden beast` number, since 1 + 1 + 439 + 9 + 8 + 208 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×1143998208² = 2617463799814422528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143998201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4071028 + ... + 4071308.

Almost surely, 2^1143998208 is an apocalyptic number.

1143998208 is a gapful number since it is divisible by the number (18) 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 1143998208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844505600).

1143998208 is an abundant number, since it is smaller than the sum of its proper divisors (2545012992).

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

1143998208 is a wasteful number, since it uses less digits than its factorization.

1143998208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1143998208 is about 33823.0425597698. The cubic root of 1143998208 is about 1045.8637602586.

The spelling of 1143998208 in words is "one billion, one hundred forty-three million, nine hundred ninety-eight thousand, two hundred eight".