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12870054 = 23217137307
BaseRepresentation
bin110001000110…
…000110100110
3220012212101200
4301012012212
511243320204
61135503330
7214252011
oct61060646
926185350
1012870054
1172a050a
124387b46
132888022
1419d0378
1511e3539
hexc461a6

12870054 has 48 divisors (see below), whose sum is σ = 29837808. Its totient is φ = 3995136.

The previous prime is 12870047. The next prime is 12870079. The reversal of 12870054 is 45007821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41769 + ... + 42075.

It is an arithmetic number, because the mean of its divisors is an integer number (621621).

Almost surely, 212870054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12870054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14918904).

12870054 is an abundant number, since it is smaller than the sum of its proper divisors (16967754).

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

12870054 is a wasteful number, since it uses less digits than its factorization.

12870054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 12870054 is about 3587.4857491006. The cubic root of 12870054 is about 234.3473910945.

Adding to 12870054 its reverse (45007821), we get a palindrome (57877875).

The spelling of 12870054 in words is "twelve million, eight hundred seventy thousand, fifty-four".

Divisors: 1 2 3 6 9 17 18 34 51 102 137 153 274 306 307 411 614 822 921 1233 1842 2329 2466 2763 4658 5219 5526 6987 10438 13974 15657 20961 31314 41922 42059 46971 84118 93942 126177 252354 378531 715003 757062 1430006 2145009 4290018 6435027 12870054