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12887863130 = 251288786313
BaseRepresentation
bin11000000000010110…
…10010111101011010
31020021011210021121002
430000023102331122
5202343243110010
65530503345002
7634242012662
oct140013227532
936234707532
1012887863130
11551395435a
1225b8152162
1312a509bb1c
148a38d91a2
155066a11a5
hex3002d2f5a

12887863130 has 8 divisors (see below), whose sum is σ = 23198153652. Its totient is φ = 5155145248.

The previous prime is 12887863103. The next prime is 12887863159. The reversal of 12887863130 is 3136878821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11744273641 + 1143589489 = 108371^2 + 33817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128878631302 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644393147 + ... + 644393166.

Almost surely, 212887863130 is an apocalyptic number.

12887863130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12887863130 is a deficient number, since it is larger than the sum of its proper divisors (10310290522).

12887863130 is a wasteful number, since it uses less digits than its factorization.

12887863130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288786320.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 12887863130 in words is "twelve billion, eight hundred eighty-seven million, eight hundred sixty-three thousand, one hundred thirty".

Divisors: 1 2 5 10 1288786313 2577572626 6443931565 12887863130