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1203228 = 223313857
BaseRepresentation
bin100100101110000011100
32021010112000
410211300130
5302000403
641442300
713140645
oct4456034
92233460
101203228
11752004
124a0390
13331890
142346cc
1518b7a3
hex125c1c

1203228 has 48 divisors (see below), whose sum is σ = 3363360. Its totient is φ = 369792.

The previous prime is 1203221. The next prime is 1203229. The reversal of 1203228 is 8223021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1203228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203221) 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, 976 + ... + 1832.

It is an arithmetic number, because the mean of its divisors is an integer number (70070).

21203228 is an apocalyptic number.

1203228 is a gapful number since it is divisible by the number (18) 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 1203228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1681680).

1203228 is an abundant number, since it is smaller than the sum of its proper divisors (2160132).

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

1203228 is a wasteful number, since it uses less digits than its factorization.

1203228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1203228 is about 1096.9174991767. The cubic root of 1203228 is about 106.3610566585.

Adding to 1203228 its reverse (8223021), we get a palindrome (9426249).

It can be divided in two parts, 1203 and 228, that added together give a triangular number (1431 = T53).

The spelling of 1203228 in words is "one million, two hundred three thousand, two hundred twenty-eight".

Divisors: 1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 108 117 156 234 351 468 702 857 1404 1714 2571 3428 5142 7713 10284 11141 15426 22282 23139 30852 33423 44564 46278 66846 92556 100269 133692 200538 300807 401076 601614 1203228