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12907255090 = 2512011074709
BaseRepresentation
bin11000000010101010…
…10001010100110010
31020022112021111100211
430001111101110302
5202413224130330
65532435134334
7634565600212
oct140125212462
936275244324
1012907255090
115523899874
1226027443aa
1312a90cb562
148a6306242
15508231d2a
hex301551532

12907255090 has 16 divisors (see below), whose sum is σ = 23252425560. Its totient is φ = 5158598400.

The previous prime is 12907255079. The next prime is 12907255091. The reversal of 12907255090 is 9055270921.

It can be written as a sum of positive squares in 4 ways, for example, as 2478147961 + 10429107129 = 49781^2 + 102123^2 .

It is not an unprimeable number, because it can be changed into a prime (12907255091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525345 + ... + 549364.

Almost surely, 212907255090 is an apocalyptic number.

12907255090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12907255090 is a deficient number, since it is larger than the sum of its proper divisors (10345170470).

12907255090 is a wasteful number, since it uses less digits than its factorization.

12907255090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075917.

The product of its (nonzero) digits is 56700, while the sum is 40.

The spelling of 12907255090 in words is "twelve billion, nine hundred seven million, two hundred fifty-five thousand, ninety".

Divisors: 1 2 5 10 1201 2402 6005 12010 1074709 2149418 5373545 10747090 1290725509 2581451018 6453627545 12907255090