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214370816870 = 2572479308329
BaseRepresentation
bin1100011110100101111…
…1110001001101100110
3202111022212111211012002
43013221133301031212
512003012412114440
6242251450325302
721326210610200
oct3075137611546
9674285454162
10214370816870
1182a06812661
1235668429832
13172a46c2402
14a538923770
155899e04115
hex31e97f1366

214370816870 has 48 divisors (see below), whose sum is σ = 458416635840. Its totient is φ = 71934758784.

The previous prime is 214370816851. The next prime is 214370816879. The reversal of 214370816870 is 78618073412.

It is a happy number.

It is a super-2 number, since 2×2143708168702 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214370816879) 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, 4631135 + ... + 4677194.

It is an arithmetic number, because the mean of its divisors is an integer number (9550346580).

Almost surely, 2214370816870 is an apocalyptic number.

214370816870 is an abundant number, since it is smaller than the sum of its proper divisors (244045818970).

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

214370816870 is a wasteful number, since it uses less digits than its factorization.

214370816870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9308397 (or 9308390 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 214370816870 in words is "two hundred fourteen billion, three hundred seventy million, eight hundred sixteen thousand, eight hundred seventy".

Divisors: 1 2 5 7 10 14 35 47 49 70 94 98 235 245 329 470 490 658 1645 2303 3290 4606 11515 23030 9308329 18616658 46541645 65158303 93083290 130316606 325791515 437491463 456108121 651583030 874982926 912216242 2187457315 2280540605 3062440241 4374914630 4561081210 6124880482 15312201205 21437081687 30624402410 42874163374 107185408435 214370816870