1097128 has 16 divisors (see below), whose sum is σ = 2128500. Its totient is φ = 529536.

The previous prime is 1097113. The next prime is 1097141. The reversal of 1097128 is 8217901.

It can be written as a sum of positive squares in 2 ways, for example, as 996004 + 101124 = 998^2 + 318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1097096 and 1097105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133 + ... + 2596.

2^1097128 is an apocalyptic number.

It is an amenable number.

1097128 is a deficient number, since it is larger than the sum of its proper divisors (1031372).

1097128 is a wasteful number, since it uses less digits than its factorization.

1097128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764 (or 4760 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1097128 is about 1047.4387810273. The cubic root of 1097128 is about 103.1380935930.

It can be divided in two parts, 1097 and 128, that added together give a triangular number (1225 = T₄₉).

The spelling of 1097128 in words is "one million, ninety-seven thousand, one hundred twenty-eight".