1133220 has 96 divisors (see below), whose sum is σ = 3701376. Its totient is φ = 256000.

The previous prime is 1133219. The next prime is 1133227. The reversal of 1133220 is 223311.

1133220 = T₂₄₁ + T₂₄₂ + ... + T₂₇₄.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1133196 and 1133205.

It is not an unprimeable number, because it can be changed into a prime (1133227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11170 + ... + 11270.

It is an arithmetic number, because the mean of its divisors is an integer number (38556).

2^1133220 is an apocalyptic number.

1133220 is a gapful number since it is divisible by the number (10) 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 1133220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1850688).

1133220 is an abundant number, since it is smaller than the sum of its proper divisors (2568156).

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

1133220 is a wasteful number, since it uses less digits than its factorization.

1133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1133220 is about 1064.5280644492. The cubic root of 1133220 is about 104.2568846847.

Adding to 1133220 its reverse (223311), we get a palindrome (1356531).

Subtracting from 1133220 its reverse (223311), we obtain a palindrome (909909).

It can be divided in two parts, 113 and 3220, that added together give a palindrome (3333).

The spelling of 1133220 in words is "one million, one hundred thirty-three thousand, two hundred twenty".