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213006080 = 285723773
BaseRepresentation
bin11001011001000…
…11011100000000
3112211210211102002
430230203130000
5414012143310
633045243132
75164343660
oct1454433400
9484724362
10213006080
11aa266691
125b4034a8
133518c201
142040a1a0
1513a77da5
hexcb23700

213006080 has 72 divisors (see below), whose sum is σ = 583128672. Its totient is φ = 73027584.

The previous prime is 213006061. The next prime is 213006109. The reversal of 213006080 is 80600312.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 2927 + ... + 20846.

Almost surely, 2213006080 is an apocalyptic number.

213006080 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 213006080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291564336).

213006080 is an abundant number, since it is smaller than the sum of its proper divisors (370122592).

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

213006080 is an equidigital number, since it uses as much as digits as its factorization.

213006080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23801 (or 23787 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 213006080 is about 14594.7278152078. The cubic root of 213006080 is about 597.2149442953.

Adding to 213006080 its reverse (80600312), we get a palindrome (293606392).

The spelling of 213006080 in words is "two hundred thirteen million, six thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 448 560 640 896 1120 1280 1792 2240 4480 8960 23773 47546 95092 118865 166411 190184 237730 332822 380368 475460 665644 760736 832055 950920 1331288 1521472 1664110 1901840 2662576 3042944 3328220 3803680 5325152 6085888 6656440 7607360 10650304 13312880 15214720 21300608 26625760 30429440 42601216 53251520 106503040 213006080