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1219230 = 2325192331
BaseRepresentation
bin100101001101010011110
32021221110200
410221222132
5303003410
642044330
713235415
oct4515236
92257420
101219230
11763031
124a96a6
13338c4c
1423a47c
151913c0
hex129a9e

1219230 has 96 divisors (see below), whose sum is σ = 3594240. Its totient is φ = 285120.

The previous prime is 1219213. The next prime is 1219237. The reversal of 1219230 is 329121.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39315 + ... + 39345.

It is an arithmetic number, because the mean of its divisors is an integer number (37440).

21219230 is an apocalyptic number.

1219230 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 1219230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797120).

1219230 is an abundant number, since it is smaller than the sum of its proper divisors (2375010).

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

1219230 is a wasteful number, since it uses less digits than its factorization.

1219230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1219230 is about 1104.1874840805. The cubic root of 1219230 is about 106.8304882868.

The spelling of 1219230 in words is "one million, two hundred nineteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 19 23 30 31 38 45 46 57 62 69 90 93 95 114 115 138 155 171 186 190 207 230 279 285 310 342 345 414 437 465 558 570 589 690 713 855 874 930 1035 1178 1311 1395 1426 1710 1767 2070 2139 2185 2622 2790 2945 3534 3565 3933 4278 4370 5301 5890 6417 6555 7130 7866 8835 10602 10695 12834 13110 13547 17670 19665 21390 26505 27094 32085 39330 40641 53010 64170 67735 81282 121923 135470 203205 243846 406410 609615 1219230