11420020 has 12 divisors (see below), whose sum is σ = 23982084. Its totient is φ = 4568000.

The previous prime is 11420009. The next prime is 11420027. The reversal of 11420020 is 2002411.

It can be written as a sum of positive squares in 2 ways, for example, as 7817616 + 3602404 = 2796^2 + 1898^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11419979 and 11420006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420027) by changing a digit.

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, 285481 + ... + 285520.

It is an arithmetic number, because the mean of its divisors is an integer number (1998507).

Almost surely, 2^11420020 is an apocalyptic number.

11420020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11420020 is an abundant number, since it is smaller than the sum of its proper divisors (12562064).

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

11420020 is a wasteful number, since it uses less digits than its factorization.

11420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571010 (or 571008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 11420020 is about 3379.3520088916. The cubic root of 11420020 is about 225.1933810720.

Adding to 11420020 its reverse (2002411), we get a palindrome (13422431).

The spelling of 11420020 in words is "eleven million, four hundred twenty thousand, twenty".