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213452800 = 2115211379
BaseRepresentation
bin11001011100100…
…00100000000000
3112212122112012021
430232100200000
5414120442200
633103011224
75201214241
oct1456204000
9485575167
10213452800
11aa541280
125b599b14
13352b7642
14204c4cc8
1513b1541a
hexcb90800

213452800 has 144 divisors (see below), whose sum is σ = 578869200. Its totient is φ = 77414400.

The previous prime is 213452797. The next prime is 213452807. The reversal of 213452800 is 8254312.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (213452807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 563011 + ... + 563389.

It is an arithmetic number, because the mean of its divisors is an integer number (4019925).

Almost surely, 2213452800 is an apocalyptic number.

213452800 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 213452800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289434600).

213452800 is an abundant number, since it is smaller than the sum of its proper divisors (365416400).

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

213452800 is a wasteful number, since it uses less digits than its factorization.

213452800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 213452800 is about 14610.0239561747. The cubic root of 213452800 is about 597.6321492453.

The spelling of 213452800 in words is "two hundred thirteen million, four hundred fifty-two thousand, eight hundred".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 32 40 44 50 55 64 80 88 100 110 128 160 176 200 220 256 275 320 352 379 400 440 512 550 640 704 758 800 880 1024 1100 1280 1408 1516 1600 1760 1895 2048 2200 2560 2816 3032 3200 3520 3790 4169 4400 5120 5632 6064 6400 7040 7580 8338 8800 9475 10240 11264 12128 12800 14080 15160 16676 17600 18950 20845 22528 24256 25600 28160 30320 33352 35200 37900 41690 48512 51200 56320 60640 66704 70400 75800 83380 97024 104225 112640 121280 133408 140800 151600 166760 194048 208450 242560 266816 281600 303200 333520 388096 416900 485120 533632 563200 606400 667040 776192 833800 970240 1067264 1212800 1334080 1667600 1940480 2134528 2425600 2668160 3335200 3880960 4269056 4851200 5336320 6670400 8538112 9702400 10672640 13340800 19404800 21345280 26681600 42690560 53363200 106726400 213452800