1143728 has 10 divisors (see below), whose sum is σ = 2216004. Its totient is φ = 571856.

The previous prime is 1143719. The next prime is 1143749. The reversal of 1143728 is 8273411.

It is a super-2 number, since 2×1143728² = 2616227475968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143697 and 1143706.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35726 + ... + 35757.

2^1143728 is an apocalyptic number.

It is an amenable number.

1143728 is a deficient number, since it is larger than the sum of its proper divisors (1072276).

1143728 is an equidigital number, since it uses as much as digits as its factorization.

1143728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71491 (or 71485 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 1143728 is about 1069.4521962201. The cubic root of 1143728 is about 104.5781410768.

The spelling of 1143728 in words is "one million, one hundred forty-three thousand, seven hundred twenty-eight".