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11202220 = 2253111801
BaseRepresentation
bin101010101110…
…111010101100
3210002010120001
4222232322230
510331432340
61040034044
7164134351
oct52567254
923063501
1011202220
116361437
123902924
132422b43
1416b8628
15eb429a
hexaaeeac

11202220 has 24 divisors (see below), whose sum is σ = 23613408. Its totient is φ = 4464000.

The previous prime is 11202209. The next prime is 11202221. The reversal of 11202220 is 2220211.

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 = 11202197 and 11202206.

It is not an unprimeable number, because it can be changed into a prime (11202221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5320 + ... + 7120.

It is an arithmetic number, because the mean of its divisors is an integer number (983892).

Almost surely, 211202220 is an apocalyptic number.

11202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11202220 is an abundant number, since it is smaller than the sum of its proper divisors (12411188).

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

11202220 is a wasteful number, since it uses less digits than its factorization.

11202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121 (or 2119 counting only the distinct ones).

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

The square root of 11202220 is about 3346.9717656413. The cubic root of 11202220 is about 223.7525701150.

Adding to 11202220 its reverse (2220211), we get a palindrome (13422431).

Subtracting from 11202220 its reverse (2220211), we obtain a square (8982009 = 29972).

The spelling of 11202220 in words is "eleven million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 311 622 1244 1555 1801 3110 3602 6220 7204 9005 18010 36020 560111 1120222 2240444 2800555 5601110 11202220