11420220 has 48 divisors (see below), whose sum is σ = 36546048. Its totient is φ = 2610240.

The previous prime is 11420203. The next prime is 11420239. The reversal of 11420220 is 2202411.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11420196 and 11420205.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 13176 + ... + 14015.

It is an arithmetic number, because the mean of its divisors is an integer number (761376).

Almost surely, 2^11420220 is an apocalyptic number.

11420220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11420220 is an abundant number, since it is smaller than the sum of its proper divisors (25125828).

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

11420220 is a wasteful number, since it uses less digits than its factorization.

11420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27210 (or 27208 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 11420220 is about 3379.3816002340. The cubic root of 11420220 is about 225.1946956760.

Adding to 11420220 its reverse (2202411), we get a palindrome (13622631).

The spelling of 11420220 in words is "eleven million, four hundred twenty thousand, two hundred twenty".