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212201200 = 245231109157
BaseRepresentation
bin11001010010111…
…10111011110000
3112210021221022201
430221132323300
5413310414300
633020112544
75154452251
oct1451367360
9483257281
10212201200
11a98669a2
125b095754
1334c69a53
142027ab28
151396966a
hexca5eef0

212201200 has 120 divisors (see below), whose sum is σ = 534469760. Its totient is φ = 80870400.

The previous prime is 212201159. The next prime is 212201201. The reversal of 212201200 is 2102212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1351522 + ... + 1351678.

Almost surely, 2212201200 is an apocalyptic number.

212201200 is a gapful number since it is divisible by the number (20) 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 212201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267234880).

212201200 is an abundant number, since it is smaller than the sum of its proper divisors (322268560).

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

212201200 is a wasteful number, since it uses less digits than its factorization.

212201200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 212201200 is about 14567.1273763910. The cubic root of 212201200 is about 596.4617684696.

Adding to 212201200 its reverse (2102212), we get a palindrome (214303412).

The spelling of 212201200 in words is "two hundred twelve million, two hundred one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 31 40 50 62 80 100 109 124 155 157 200 218 248 310 314 400 436 496 545 620 628 775 785 872 1090 1240 1256 1550 1570 1744 2180 2480 2512 2725 3100 3140 3379 3925 4360 4867 5450 6200 6280 6758 7850 8720 9734 10900 12400 12560 13516 15700 16895 17113 19468 21800 24335 27032 31400 33790 34226 38936 43600 48670 54064 62800 67580 68452 77872 84475 85565 97340 121675 135160 136904 168950 171130 194680 243350 270320 273808 337900 342260 389360 427825 486700 530503 675800 684520 855650 973400 1061006 1351600 1369040 1711300 1946800 2122012 2652515 3422600 4244024 5305030 6845200 8488048 10610060 13262575 21220120 26525150 42440240 53050300 106100600 212201200