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214881686930 = 2519270184913
BaseRepresentation
bin1100100000011111110…
…0100101010110010010
3202112122110210201011102
43020013330211112102
512010034202440210
6242414300144402
721344653126241
oct3100774452622
9675573721142
10214881686930
1183149123919
123578b538102
13173564b20a1
14a586708958
1558c9bb7ea5
hex3207f25592

214881686930 has 48 divisors (see below), whose sum is σ = 408802828824. Its totient is φ = 81311731200.

The previous prime is 214881686923. The next prime is 214881686933. The reversal of 214881686930 is 39686188412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 178990763329 + 35890923601 = 423073^2 + 189449^2 .

It is not an unprimeable number, because it can be changed into a prime (214881686933) 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, 2488154 + ... + 2573066.

Almost surely, 2214881686930 is an apocalyptic number.

214881686930 is a deficient number, since it is larger than the sum of its proper divisors (193921141894).

214881686930 is a wasteful number, since it uses less digits than its factorization.

214881686930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85659 (or 85640 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 214881686930 in words is "two hundred fourteen billion, eight hundred eighty-one million, six hundred eighty-six thousand, nine hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 361 701 722 1402 1805 3505 3610 7010 13319 26638 66595 84913 133190 169826 253061 424565 506122 849130 1265305 1613347 2530610 3226694 8066735 16133470 30653593 59524013 61307186 119048026 153267965 297620065 306535930 595240130 1130956247 2261912494 5654781235 11309562470 21488168693 42976337386 107440843465 214881686930