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220747488 = 25313792239
BaseRepresentation
bin11010010100001…
…01011011100000
3120101101010121220
431022011123200
5423002404423
633523215040
75320215453
oct1512053340
9511333556
10220747488
11103673945
1261b17480
133696ca20
142146349a
15145a69e3
hexd2856e0

220747488 has 96 divisors (see below), whose sum is σ = 632217600. Its totient is φ = 67032576.

The previous prime is 220747487. The next prime is 220747511. The reversal of 220747488 is 884747022.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220747487) 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, 97473 + ... + 99711.

It is an arithmetic number, because the mean of its divisors is an integer number (6585600).

Almost surely, 2220747488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220747488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316108800).

220747488 is an abundant number, since it is smaller than the sum of its proper divisors (411470112).

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

220747488 is a wasteful number, since it uses less digits than its factorization.

220747488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344 (or 2336 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 220747488 is about 14857.5734223325. The cubic root of 220747488 is about 604.3640043778.

The spelling of 220747488 in words is "two hundred twenty million, seven hundred forty-seven thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 79 96 104 156 158 208 237 312 316 416 474 624 632 948 1027 1248 1264 1896 2054 2239 2528 3081 3792 4108 4478 6162 6717 7584 8216 8956 12324 13434 16432 17912 24648 26868 29107 32864 35824 49296 53736 58214 71648 87321 98592 107472 116428 174642 176881 214944 232856 349284 353762 465712 530643 698568 707524 931424 1061286 1397136 1415048 2122572 2299453 2794272 2830096 4245144 4598906 5660192 6898359 8490288 9197812 13796718 16980576 18395624 27593436 36791248 55186872 73582496 110373744 220747488