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120330220 = 22531421461
BaseRepresentation
bin1110010110000…
…01011111101100
322101102102000211
413023001133230
5221301031340
615535032204
72660534653
oct713013754
9271372024
10120330220
1161a1796a
123436b664
131bc1131a
1411da419a
15a86d5ea
hex72c17ec

120330220 has 48 divisors (see below), whose sum is σ = 262031616. Its totient is φ = 46368000.

The previous prime is 120330209. The next prime is 120330229. The reversal of 120330220 is 22033021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 120330220.

It is not an unprimeable number, because it can be changed into a prime (120330229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260790 + ... + 261250.

It is an arithmetic number, because the mean of its divisors is an integer number (5458992).

Almost surely, 2120330220 is an apocalyptic number.

120330220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120330220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131015808).

120330220 is an abundant number, since it is smaller than the sum of its proper divisors (141701396).

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

120330220 is a wasteful number, since it uses less digits than its factorization.

120330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 120330220 is about 10969.5132070662. The cubic root of 120330220 is about 493.6944407922.

Adding to 120330220 its reverse (22033021), we get a palindrome (142363241).

The spelling of 120330220 in words is "one hundred twenty million, three hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 421 461 620 842 922 1684 1844 2105 2305 4210 4610 8420 9220 13051 14291 26102 28582 52204 57164 65255 71455 130510 142910 194081 261020 285820 388162 776324 970405 1940810 3881620 6016511 12033022 24066044 30082555 60165110 120330220