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216148200 = 233521721191
BaseRepresentation
bin11001110001000…
…10100011101000
3120001201110120220
430320202203220
5420313220300
633240450040
75233141452
oct1470424350
9501643526
10216148200
11101012384
1260479920
1335a1c458
14209c72d2
1513e98da0
hexce228e8

216148200 has 96 divisors (see below), whose sum is σ = 709508160. Its totient is φ = 54246400.

The previous prime is 216148157. The next prime is 216148201. The reversal of 216148200 is 2841612.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (216148201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396 + ... + 20795.

It is an arithmetic number, because the mean of its divisors is an integer number (7390710).

Almost surely, 2216148200 is an apocalyptic number.

216148200 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 216148200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354754080).

216148200 is an abundant number, since it is smaller than the sum of its proper divisors (493359960).

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

216148200 is a wasteful number, since it uses less digits than its factorization.

216148200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21227 (or 21218 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 216148200 is about 14701.9794585627. The cubic root of 216148200 is about 600.1371908509.

Adding to 216148200 its reverse (2841612), we get a palindrome (218989812).

The spelling of 216148200 in words is "two hundred sixteen million, one hundred forty-eight thousand, two hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 17 20 24 25 30 34 40 50 51 60 68 75 85 100 102 120 136 150 170 200 204 255 300 340 408 425 510 600 680 850 1020 1275 1700 2040 2550 3400 5100 10200 21191 42382 63573 84764 105955 127146 169528 211910 254292 317865 360247 423820 508584 529775 635730 720494 847640 1059550 1080741 1271460 1440988 1589325 1801235 2119100 2161482 2542920 2881976 3178650 3602470 4238200 4322964 5403705 6357300 7204940 8645928 9006175 10807410 12714600 14409880 18012350 21614820 27018525 36024700 43229640 54037050 72049400 108074100 216148200