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12870254190 = 2353179283619
BaseRepresentation
bin10111111110010000…
…00111111001101110
31020012221122122200010
423333020013321232
5202324241113230
65525034114050
7633636232653
oct137710077156
936187578603
1012870254190
115504a17512
1225b227b926
1312a1544b31
148a1433c2a
15504d739b0
hex2ff207e6e

12870254190 has 128 divisors (see below), whose sum is σ = 32455065600. Its totient is φ = 3262446720.

The previous prime is 12870254183. The next prime is 12870254231. The reversal of 12870254190 is 9145207821.

It is a super-2 number, since 2×128702541902 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20791701 + ... + 20792319.

It is an arithmetic number, because the mean of its divisors is an integer number (253555200).

Almost surely, 212870254190 is an apocalyptic number.

12870254190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12870254190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16227532800).

12870254190 is an abundant number, since it is smaller than the sum of its proper divisors (19584811410).

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

12870254190 is a wasteful number, since it uses less digits than its factorization.

12870254190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 12870254190 in words is "twelve billion, eight hundred seventy million, two hundred fifty-four thousand, one hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 31 62 79 93 155 158 186 237 283 310 395 465 474 566 619 790 849 930 1185 1238 1415 1698 1857 2370 2449 2830 3095 3714 4245 4898 6190 7347 8490 8773 9285 12245 14694 17546 18570 19189 22357 24490 26319 36735 38378 43865 44714 48901 52638 57567 67071 73470 87730 95945 97802 111785 115134 131595 134142 146703 175177 191890 223570 244505 263190 287835 293406 335355 350354 489010 525531 575670 670710 693067 733515 875885 1051062 1386134 1467030 1515931 1751770 2079201 2627655 3031862 3465335 4158402 4547793 5255310 5430487 6930670 7579655 9095586 10396005 10860974 13838983 15159310 16291461 20792010 22738965 27152435 27677966 32582922 41516949 45477930 54304870 69194915 81457305 83033898 138389830 162914610 207584745 415169490 429008473 858016946 1287025419 2145042365 2574050838 4290084730 6435127095 12870254190