1128213 has 12 divisors (see below), whose sum is σ = 1654848. Its totient is φ = 740520.

The previous prime is 1128209. The next prime is 1128223. The reversal of 1128213 is 3128211.

It is not a de Polignac number, because 1128213 - 2² = 1128209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128223) 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, 333 + ... + 1538.

It is an arithmetic number, because the mean of its divisors is an integer number (137904).

2^1128213 is an apocalyptic number.

It is an amenable number.

1128213 is a deficient number, since it is larger than the sum of its proper divisors (526635).

1128213 is a wasteful number, since it uses less digits than its factorization.

1128213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944 (or 1941 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1128213 is about 1062.1737146060. The cubic root of 1128213 is about 104.1031090324.

It can be divided in two parts, 11 and 28213, that added together give a square (28224 = 168²).

The spelling of 1128213 in words is "one million, one hundred twenty-eight thousand, two hundred thirteen".