1089288 has 60 divisors (see below), whose sum is σ = 3127245. Its totient is φ = 354240.

The previous prime is 1089259. The next prime is 1089299. The reversal of 1089288 is 8829801.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 777924 + 311364 = 882^2 + 558^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=738.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 26548 + ... + 26588.

2^1089288 is an apocalyptic number.

1089288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089288

1089288 is an abundant number, since it is smaller than the sum of its proper divisors (2037957).

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

1089288 is an equidigital number, since it uses as much as digits as its factorization.

1089288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1089288 is about 1043.6896090313. The cubic root of 1089288 is about 102.8918335366.

It can be divided in two parts, 10 and 89288, that added together give a palindrome (89298).

The spelling of 1089288 in words is "one million, eighty-nine thousand, two hundred eighty-eight".