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1121220 = 223256229
BaseRepresentation
bin100010001101111000100
32002222000200
410101233010
5241334340
640010500
712346602
oct4215704
92088020
101121220
116a6431
12460a30
13303459
14212872
15172330
hex111bc4

1121220 has 36 divisors (see below), whose sum is σ = 3401580. Its totient is φ = 298944.

The previous prime is 1121203. The next prime is 1121221. The reversal of 1121220 is 221211.

It can be written as a sum of positive squares in 2 ways, for example, as 484416 + 636804 = 696^2 + 798^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1121221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2935 + ... + 3294.

21121220 is an apocalyptic number.

1121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121220 is an abundant number, since it is smaller than the sum of its proper divisors (2280360).

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

1121220 is a wasteful number, since it uses less digits than its factorization.

1121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244 (or 6239 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1121220 is about 1058.8767633677. The cubic root of 1121220 is about 103.8875757516.

Adding to 1121220 its reverse (221211), we get a palindrome (1342431).

Subtracting from 1121220 its reverse (221211), we obtain a palindrome (900009).

The spelling of 1121220 in words is "one million, one hundred twenty-one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 6229 12458 18687 24916 31145 37374 56061 62290 74748 93435 112122 124580 186870 224244 280305 373740 560610 1121220