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212945160 = 233519591583
BaseRepresentation
bin11001011000101…
…00100100001000
3112211200201211210
430230110210020
5414003221120
633044053120
75164001241
oct1454244410
9484621753
10212945160
11aa22493a
125b3941a0
133516a56c
14203d1cc8
1513a64ce0
hexcb14908

212945160 has 128 divisors (see below), whose sum is σ = 684288000. Its totient is φ = 52851456.

The previous prime is 212945147. The next prime is 212945171. The reversal of 212945160 is 61549212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133729 + ... + 135311.

It is an arithmetic number, because the mean of its divisors is an integer number (5346000).

Almost surely, 2212945160 is an apocalyptic number.

212945160 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 212945160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342144000).

212945160 is an abundant number, since it is smaller than the sum of its proper divisors (471342840).

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

212945160 is a wasteful number, since it uses less digits than its factorization.

212945160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675 (or 1671 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 212945160 is about 14592.6406109381. The cubic root of 212945160 is about 597.1580041312.

The spelling of 212945160 in words is "two hundred twelve million, nine hundred forty-five thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 19 20 24 30 38 40 57 59 60 76 95 114 118 120 152 177 190 228 236 285 295 354 380 456 472 570 590 708 760 885 1121 1140 1180 1416 1583 1770 2242 2280 2360 3166 3363 3540 4484 4749 5605 6332 6726 7080 7915 8968 9498 11210 12664 13452 15830 16815 18996 22420 23745 26904 30077 31660 33630 37992 44840 47490 60154 63320 67260 90231 93397 94980 120308 134520 150385 180462 186794 189960 240616 280191 300770 360924 373588 451155 466985 560382 601540 721848 747176 902310 933970 1120764 1203080 1400955 1774543 1804620 1867940 2241528 2801910 3549086 3609240 3735880 5323629 5603820 7098172 8872715 10647258 11207640 14196344 17745430 21294516 26618145 35490860 42589032 53236290 70981720 106472580 212945160