11444420 has 24 divisors (see below), whose sum is σ = 25882584. Its totient is φ = 4225536.

The previous prime is 11444401. The next prime is 11444437. The reversal of 11444420 is 2444411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 894916 + 10549504 = 946^2 + 3248^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11444392 and 11444401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21749 + ... + 22268.

It is an arithmetic number, because the mean of its divisors is an integer number (1078441).

Almost surely, 2^11444420 is an apocalyptic number.

11444420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11444420 is an abundant number, since it is smaller than the sum of its proper divisors (14438164).

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

11444420 is a wasteful number, since it uses less digits than its factorization.

11444420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44039 (or 44037 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 11444420 is about 3382.9602421548. The cubic root of 11444420 is about 225.3536496121.

Adding to 11444420 its reverse (2444411), we get a palindrome (13888831).

Subtracting from 11444420 its reverse (2444411), we obtain a palindrome (9000009).

The spelling of 11444420 in words is "eleven million, four hundred forty-four thousand, four hundred twenty".