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213982208 = 210113157
BaseRepresentation
bin11001100000100…
…01110000000000
3112220122102101222
430300101300000
5414234412313
633122214212
75205550556
oct1460216000
9486572358
10213982208
11aa873000
125b7b4368
13354415bb
14205c1bd6
1513bbc208
hexcc11c00

213982208 has 88 divisors (see below), whose sum is σ = 473495664. Its totient is φ = 96645120.

The previous prime is 213982189. The next prime is 213982229. The reversal of 213982208 is 802289312.

It is a tau number, because it is divible by the number of its divisors (88).

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1362866 + ... + 1363022.

Almost surely, 2213982208 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 213982208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236747832).

213982208 is an abundant number, since it is smaller than the sum of its proper divisors (259513456).

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

213982208 is an equidigital number, since it uses as much as digits as its factorization.

213982208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 213982208 is about 14628.1307076468. The cubic root of 213982208 is about 598.1258259556.

The spelling of 213982208 in words is "two hundred thirteen million, nine hundred eighty-two thousand, two hundred eight".

Divisors: 1 2 4 8 11 16 22 32 44 64 88 121 128 157 176 242 256 314 352 484 512 628 704 968 1024 1256 1331 1408 1727 1936 2512 2662 2816 3454 3872 5024 5324 5632 6908 7744 10048 10648 11264 13816 15488 18997 20096 21296 27632 30976 37994 40192 42592 55264 61952 75988 80384 85184 110528 123904 151976 160768 170368 208967 221056 303952 340736 417934 442112 607904 681472 835868 884224 1215808 1362944 1671736 1768448 2431616 3343472 4863232 6686944 9726464 13373888 19452928 26747776 53495552 106991104 213982208