11220426 has 24 divisors (see below), whose sum is σ = 27784224. Its totient is φ = 3205800.

The previous prime is 11220403. The next prime is 11220427. The reversal of 11220426 is 62402211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11220399 and 11220408.

It is not an unprimeable number, because it can be changed into a prime (11220427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44400 + ... + 44651.

It is an arithmetic number, because the mean of its divisors is an integer number (1157676).

Almost surely, 2^11220426 is an apocalyptic number.

11220426 is an abundant number, since it is smaller than the sum of its proper divisors (16563798).

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

11220426 is a wasteful number, since it uses less digits than its factorization.

11220426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89066 (or 89063 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 11220426 is about 3349.6904334580. The cubic root of 11220426 is about 223.8737197454.

Adding to 11220426 its reverse (62402211), we get a palindrome (73622637).

The spelling of 11220426 in words is "eleven million, two hundred twenty thousand, four hundred twenty-six".