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211298080 = 2557832273
BaseRepresentation
bin11001001100000…
…10011100100000
3112201121001110211
430212002130200
5413043014310
632544503504
75144001250
oct1446023440
9481531424
10211298080
11a92aa414
125a91ab94
1334a11966
14200c3960
151383bc8a
hexc982720

211298080 has 96 divisors (see below), whose sum is σ = 577632384. Its totient is φ = 71540736.

The previous prime is 211298039. The next prime is 211298081. The reversal of 211298080 is 80892112.

It is a happy number.

It is a super-2 number, since 2×2112980802 = 89293757223372800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211298081) 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, 91824 + ... + 94096.

It is an arithmetic number, because the mean of its divisors is an integer number (6017004).

Almost surely, 2211298080 is an apocalyptic number.

211298080 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 211298080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288816192).

211298080 is an abundant number, since it is smaller than the sum of its proper divisors (366334304).

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

211298080 is a wasteful number, since it uses less digits than its factorization.

211298080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378 (or 2370 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 211298080 is about 14536.0957619300. The cubic root of 211298080 is about 595.6143925518.

The spelling of 211298080 in words is "two hundred eleven million, two hundred ninety-eight thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 83 112 140 160 166 224 280 332 415 560 581 664 830 1120 1162 1328 1660 2273 2324 2656 2905 3320 4546 4648 5810 6640 9092 9296 11365 11620 13280 15911 18184 18592 22730 23240 31822 36368 45460 46480 63644 72736 79555 90920 92960 127288 159110 181840 188659 254576 318220 363680 377318 509152 636440 754636 943295 1272880 1320613 1509272 1886590 2545760 2641226 3018544 3773180 5282452 6037088 6603065 7546360 10564904 13206130 15092720 21129808 26412260 30185440 42259616 52824520 105649040 211298080