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13823812870 = 257233478429
BaseRepresentation
bin11001101111111011…
…01010010100000110
31022200101221110021021
430313331222110012
5211302344002440
610203420141354
7666365320300
oct146775522406
938611843237
1013823812870
11595420023a
12281969785a
1313c3c7163a
14951d32970
1555d92e84a
hex337f6a506

13823812870 has 48 divisors (see below), whose sum is σ = 28957454640. Its totient is φ = 4737614784.

The previous prime is 13823812861. The next prime is 13823812901. The reversal of 13823812870 is 7821832831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1635816 + ... + 1644244.

It is an arithmetic number, because the mean of its divisors is an integer number (603280305).

Almost surely, 213823812870 is an apocalyptic number.

13823812870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13823812870 is an abundant number, since it is smaller than the sum of its proper divisors (15133641770).

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

13823812870 is a wasteful number, since it uses less digits than its factorization.

13823812870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11797 (or 11790 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 13823812870 in words is "thirteen billion, eight hundred twenty-three million, eight hundred twelve thousand, eight hundred seventy".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 3347 6694 8429 16735 16858 23429 33470 42145 46858 59003 84290 117145 118006 164003 234290 295015 328006 413021 590030 820015 826042 1640030 2065105 4130210 28211863 56423726 141059315 197483041 282118630 394966082 987415205 1382381287 1974830410 2764762574 6911906435 13823812870