1128128 has 14 divisors (see below), whose sum is σ = 2238756. Its totient is φ = 564032.

The previous prime is 1128109. The next prime is 1128143. The reversal of 1128128 is 8218211.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8750 + ... + 8877.

2^1128128 is an apocalyptic number.

It is an amenable number.

1128128 is a deficient number, since it is larger than the sum of its proper divisors (1110628).

1128128 is an equidigital number, since it uses as much as digits as its factorization.

1128128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17639 (or 17629 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

The square root of 1128128 is about 1062.1337015649. The cubic root of 1128128 is about 104.1004945774.

It can be divided in two parts, 112812 and 8, that multiplied together give a triangular number (902496 = T₁₃₄₃).

The spelling of 1128128 in words is "one million, one hundred twenty-eight thousand, one hundred twenty-eight".