Search a number
-
+
212424800 = 2552725419
BaseRepresentation
bin11001010100101…
…01100001100000
3112210201022001012
430222111201200
5413340043200
633025000052
75156403200
oct1452254140
9483638035
10212424800
11a99a9995
125b183028
1335017763
14202d8400
15139b0a35
hexca95860

212424800 has 108 divisors (see below), whose sum is σ = 603359820. Its totient is φ = 72817920.

The previous prime is 212424791. The next prime is 212424827. The reversal of 212424800 is 8424212.

It is a happy number.

212424800 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 36491 + ... + 41909.

It is an arithmetic number, because the mean of its divisors is an integer number (5586665).

Almost surely, 2212424800 is an apocalyptic number.

212424800 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 212424800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301679910).

212424800 is an abundant number, since it is smaller than the sum of its proper divisors (390935020).

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

212424800 is a wasteful number, since it uses less digits than its factorization.

212424800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453 (or 5433 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 212424800 is about 14574.8001701567. The cubic root of 212424800 is about 596.6711955518.

The spelling of 212424800 in words is "two hundred twelve million, four hundred twenty-four thousand, eight hundred".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 49 50 56 70 80 98 100 112 140 160 175 196 200 224 245 280 350 392 400 490 560 700 784 800 980 1120 1225 1400 1568 1960 2450 2800 3920 4900 5419 5600 7840 9800 10838 19600 21676 27095 37933 39200 43352 54190 75866 86704 108380 135475 151732 173408 189665 216760 265531 270950 303464 379330 433520 531062 541900 606928 758660 867040 948325 1062124 1083800 1213856 1327655 1517320 1896650 2124248 2167600 2655310 3034640 3793300 4248496 4335200 5310620 6069280 6638275 7586600 8496992 10621240 13276550 15173200 21242480 26553100 30346400 42484960 53106200 106212400 212424800