1143304272 has 60 divisors (see below), whose sum is σ = 3490547424. Its totient is φ = 346455360.

The previous prime is 1143304259. The next prime is 1143304277. The reversal of 1143304272 is 2724033411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143304277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359308 + ... + 362475.

Almost surely, 2^1143304272 is an apocalyptic number.

1143304272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143304272 is an abundant number, since it is smaller than the sum of its proper divisors (2347243152).

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

1143304272 is a wasteful number, since it uses less digits than its factorization.

1143304272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721808 (or 721799 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1143304272 is about 33812.7826716465. The cubic root of 1143304272 is about 1045.6522478905.

Adding to 1143304272 its reverse (2724033411), we get a palindrome (3867337683).

The spelling of 1143304272 in words is "one billion, one hundred forty-three million, three hundred four thousand, two hundred seventy-two".