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12892290220 = 2256164716333
BaseRepresentation
bin11000000000111000…
…01011110010101100
31020021111010012102101
430000130023302230
5202400411241340
65531142304444
7634324441645
oct140034136254
936244105371
1012892290220
1155163a8507
1225b9728124
1312a5c8bbc4
148a432c6cc
15506c77c9a
hex30070bcac

12892290220 has 48 divisors (see below), whose sum is σ = 27561860928. Its totient is φ = 5064226560.

The previous prime is 12892290217. The next prime is 12892290233. The reversal of 12892290220 is 2209229821.

It is a super-2 number, since 2×128922902202 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12892290220.

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, 781174 + ... + 797506.

It is an arithmetic number, because the mean of its divisors is an integer number (574205436).

Almost surely, 212892290220 is an apocalyptic number.

12892290220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12892290220 is an abundant number, since it is smaller than the sum of its proper divisors (14669570708).

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

12892290220 is a wasteful number, since it uses less digits than its factorization.

12892290220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17050 (or 17048 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 12892290220 in words is "twelve billion, eight hundred ninety-two million, two hundred ninety thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 647 1220 1294 2588 3235 6470 12940 16333 32666 39467 65332 78934 81665 157868 163330 197335 326660 394670 789340 996313 1992626 3985252 4981565 9963130 10567451 19926260 21134902 42269804 52837255 105674510 211349020 644614511 1289229022 2578458044 3223072555 6446145110 12892290220