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1122220 = 225115101
BaseRepresentation
bin100010001111110101100
32010000101201
410101332230
5241402340
640015244
712352531
oct4217654
92100351
101122220
116a7160
12461524
13303a48
14212d88
1517279a
hex111fac

1122220 has 24 divisors (see below), whose sum is σ = 2571408. Its totient is φ = 408000.

The previous prime is 1122181. The next prime is 1122227. The reversal of 1122220 is 222211.

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 = 1122197 and 1122206.

It is not an unprimeable number, because it can be changed into a prime (1122227) 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 7 ways as a sum of consecutive naturals, for example, 2331 + ... + 2770.

It is an arithmetic number, because the mean of its divisors is an integer number (107142).

21122220 is an apocalyptic number.

1122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122220 is an abundant number, since it is smaller than the sum of its proper divisors (1449188).

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

1122220 is a wasteful number, since it uses less digits than its factorization.

1122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121 (or 5119 counting only the distinct ones).

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

The square root of 1122220 is about 1059.3488566096. The cubic root of 1122220 is about 103.9184518525.

Adding to 1122220 its reverse (222211), we get a palindrome (1344431).

Subtracting from 1122220 its reverse (222211), we obtain a palindrome (900009).

It can be divided in two parts, 112 and 2220, that added together give a palindrome (2332).

The spelling of 1122220 in words is "one million, one hundred twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 5101 10202 20404 25505 51010 56111 102020 112222 224444 280555 561110 1122220