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1213230 = 235371093
BaseRepresentation
bin100101000001100101110
32021122020110
410220030232
5302310410
642000450
713212054
oct4501456
92248213
101213230
11759577
124a6126
133362b5
142381d4
1518e720
hex12832e

1213230 has 32 divisors (see below), whose sum is σ = 2993184. Its totient is φ = 314496.

The previous prime is 1213213. The next prime is 1213241. The reversal of 1213230 is 323121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (93537).

21213230 is an apocalyptic number.

1213230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496592).

1213230 is an abundant number, since it is smaller than the sum of its proper divisors (1779954).

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

1213230 is a wasteful number, since it uses less digits than its factorization.

1213230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1213230 is about 1101.4672033247. The cubic root of 1213230 is about 106.6549574820.

Adding to 1213230 its reverse (323121), we get a palindrome (1536351).

The spelling of 1213230 in words is "one million, two hundred thirteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 37 74 111 185 222 370 555 1093 1110 2186 3279 5465 6558 10930 16395 32790 40441 80882 121323 202205 242646 404410 606615 1213230