11270220 has 48 divisors (see below), whose sum is σ = 33986400. Its totient is φ = 2774016.

The previous prime is 11270209. The next prime is 11270227. The reversal of 11270220 is 2207211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11270220.

It is not an unprimeable number, because it can be changed into a prime (11270227) 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 15 ways as a sum of consecutive naturals, for example, 6445 + ... + 8004.

It is an arithmetic number, because the mean of its divisors is an integer number (708050).

Almost surely, 2^11270220 is an apocalyptic number.

11270220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11270220 is an abundant number, since it is smaller than the sum of its proper divisors (22716180).

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

11270220 is a wasteful number, since it uses less digits than its factorization.

11270220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14474 (or 14472 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 11270220 is about 3357.1148327098. The cubic root of 11270220 is about 224.2043999505.

Adding to 11270220 its reverse (2207211), we get a palindrome (13477431).

The spelling of 11270220 in words is "eleven million, two hundred seventy thousand, two hundred twenty".