11424420 has 72 divisors (see below), whose sum is σ = 39609024. Its totient is φ = 2611008.

The previous prime is 11424389. The next prime is 11424433. The reversal of 11424420 is 2442411.

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

It is a junction number, because it is equal to n+sod(n) for n = 11424393 and 11424402.

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 23 ways as a sum of consecutive naturals, for example, 3274 + ... + 5793.

Almost surely, 2^11424420 is an apocalyptic number.

11424420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11424420 is an abundant number, since it is smaller than the sum of its proper divisors (28184604).

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

11424420 is a wasteful number, since it uses less digits than its factorization.

11424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089 (or 9084 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 11424420 is about 3380.0029585786. The cubic root of 11424420 is about 225.2222988161. Note that the first 4 decimals are identical.

Adding to 11424420 its reverse (2442411), we get a palindrome (13866831).

Subtracting from 11424420 its reverse (2442411), we obtain a square (8982009 = 2997²).

The spelling of 11424420 in words is "eleven million, four hundred twenty-four thousand, four hundred twenty".