11443220 has 12 divisors (see below), whose sum is σ = 24030804. Its totient is φ = 4577280.

The previous prime is 11443217. The next prime is 11443241. The reversal of 11443220 is 2234411.

It can be written as a sum of positive squares in 2 ways, for example, as 8844676 + 2598544 = 2974^2 + 1612^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286061 + ... + 286100.

It is an arithmetic number, because the mean of its divisors is an integer number (2002567).

Almost surely, 2^11443220 is an apocalyptic number.

11443220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11443220 is an abundant number, since it is smaller than the sum of its proper divisors (12587584).

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

11443220 is a wasteful number, since it uses less digits than its factorization.

11443220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572170 (or 572168 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 11443220 is about 3382.7828780458. The cubic root of 11443220 is about 225.3457728817.

Adding to 11443220 its reverse (2234411), we get a palindrome (13677631).

It can be divided in two parts, 114 and 43220, that added together give a palindrome (43334).

The spelling of 11443220 in words is "eleven million, four hundred forty-three thousand, two hundred twenty".