11123620 has 12 divisors (see below), whose sum is σ = 23359644. Its totient is φ = 4449440.

The previous prime is 11123599. The next prime is 11123621. The reversal of 11123620 is 2632111.

It can be written as a sum of positive squares in 2 ways, for example, as 8479744 + 2643876 = 2912^2 + 1626^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11123594 and 11123603.

It is not an unprimeable number, because it can be changed into a prime (11123621) 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 3 ways as a sum of consecutive naturals, for example, 278071 + ... + 278110.

It is an arithmetic number, because the mean of its divisors is an integer number (1946637).

Almost surely, 2^11123620 is an apocalyptic number.

11123620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123620 is an abundant number, since it is smaller than the sum of its proper divisors (12236024).

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

11123620 is a wasteful number, since it uses less digits than its factorization.

11123620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556190 (or 556188 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 11123620 is about 3335.2091388697. The cubic root of 11123620 is about 223.2280239133.

Adding to 11123620 its reverse (2632111), we get a palindrome (13755731).

The spelling of 11123620 in words is "eleven million, one hundred twenty-three thousand, six hundred twenty".