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1228300 = 225271173
BaseRepresentation
bin100101011111000001100
32022101220121
410223320030
5303301200
642154324
713304023
oct4537014
92271817
101228300
11769927
124b29a4
13340108
1423d8ba
15193e1a
hex12be0c

1228300 has 36 divisors (see below), whose sum is σ = 2718576. Its totient is φ = 481600.

The previous prime is 1228291. The next prime is 1228303. The reversal of 1228300 is 38221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1228303) 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, 7014 + ... + 7186.

It is an arithmetic number, because the mean of its divisors is an integer number (75516).

21228300 is an apocalyptic number.

1228300 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 1228300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359288).

1228300 is an abundant number, since it is smaller than the sum of its proper divisors (1490276).

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

1228300 is a wasteful number, since it uses less digits than its factorization.

1228300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1228300 is about 1108.2869664487. The cubic root of 1228300 is about 107.0947424175.

The spelling of 1228300 in words is "one million, two hundred twenty-eight thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 71 100 142 173 284 346 355 692 710 865 1420 1730 1775 3460 3550 4325 7100 8650 12283 17300 24566 49132 61415 122830 245660 307075 614150 1228300