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213914959720 = 23571169452909
BaseRepresentation
bin1100011100111001010…
…0110011111101101000
3202110011002201212201221
43013032110303331220
512001044212202340
6242134323551424
721312004104460
oct3071624637550
9673132655657
10213914959720
11827a2466410
123555b82b574
1317231124757
14a4d417cba0
15586edaa44a
hex31ce533f68

213914959720 has 64 divisors (see below), whose sum is σ = 600073142400. Its totient is φ = 66674791680.

The previous prime is 213914959703. The next prime is 213914959751. The reversal of 213914959720 is 27959419312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34723375 + ... + 34729534.

It is an arithmetic number, because the mean of its divisors is an integer number (9376142850).

Almost surely, 2213914959720 is an apocalyptic number.

213914959720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213914959720 is an abundant number, since it is smaller than the sum of its proper divisors (386158182680).

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

213914959720 is a wasteful number, since it uses less digits than its factorization.

213914959720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69452938 (or 69452934 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 213914959720 in words is "two hundred thirteen billion, nine hundred fourteen million, nine hundred fifty-nine thousand, seven hundred twenty".

Divisors: 1 2 4 5 7 8 10 11 14 20 22 28 35 40 44 55 56 70 77 88 110 140 154 220 280 308 385 440 616 770 1540 3080 69452909 138905818 277811636 347264545 486170363 555623272 694529090 763981999 972340726 1389058180 1527963998 1944681452 2430851815 2778116360 3055927996 3819909995 3889362904 4861703630 5347873993 6111855992 7639819990 9723407260 10695747986 15279639980 19446814520 21391495972 26739369965 30559279960 42782991944 53478739930 106957479860 213914959720