1109248 has 36 divisors (see below), whose sum is σ = 2534560. Its totient is φ = 474624.

The previous prime is 1109243. The next prime is 1109249. The reversal of 1109248 is 8429011.

It is a happy number.

It is a super-2 number, since 2×1109248² = 2460862251008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483 + ... + 2101.

2^1109248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1109248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267280).

1109248 is an abundant number, since it is smaller than the sum of its proper divisors (1425312).

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

1109248 is an frugal number, since it uses more digits than its factorization.

1109248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1109248 is about 1053.2084314133. The cubic root of 1109248 is about 103.5164932836.

The spelling of 1109248 in words is "one million, one hundred nine thousand, two hundred forty-eight".