1128666 has 48 divisors (see below), whose sum is σ = 2872800. Its totient is φ = 292320.

The previous prime is 1128661. The next prime is 1128667. The reversal of 1128666 is 6668211.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1128661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3060 + ... + 3408.

It is an arithmetic number, because the mean of its divisors is an integer number (59850).

2^1128666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436400).

1128666 is an abundant number, since it is smaller than the sum of its proper divisors (1744134).

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

1128666 is a wasteful number, since it uses less digits than its factorization.

1128666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 372 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 1128666 is about 1062.3869351606. The cubic root of 1128666 is about 104.1170403256.

It can be divided in two parts, 112 and 8666, that added together give a palindrome (8778).

The spelling of 1128666 in words is "one million, one hundred twenty-eight thousand, six hundred sixty-six".