1143276432 has 80 divisors (see below), whose sum is σ = 3030306048. Its totient is φ = 371226240.

The previous prime is 1143276427. The next prime is 1143276437. The reversal of 1143276432 is 2346723411.

It is an interprime number because it is at equal distance from previous prime (1143276427) and next prime (1143276437).

It is a super-3 number, since 3×1143276432³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143276393 and 1143276402.

It is not an unprimeable number, because it can be changed into a prime (1143276437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1409307 + ... + 1410117.

Almost surely, 2^1143276432 is an apocalyptic number.

1143276432 is a gapful number since it is divisible by the number (12) 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 1143276432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515153024).

1143276432 is an abundant number, since it is smaller than the sum of its proper divisors (1887029616).

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

1143276432 is a wasteful number, since it uses less digits than its factorization.

1143276432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548 (or 1542 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 1143276432 is about 33812.3709905117. The cubic root of 1143276432 is about 1045.6437604459.

Adding to 1143276432 its reverse (2346723411), we get a palindrome (3489999843).

The spelling of 1143276432 in words is "one billion, one hundred forty-three million, two hundred seventy-six thousand, four hundred thirty-two".