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12805228670 = 251398501759
BaseRepresentation
bin10111110110100000…
…00100100001111110
31020001102022000102112
423323100010201332
5202211114304140
65514352254022
7632216435123
oct137320044176
936042260375
1012805228670
115481243913
122594541312
131290c285b0
1489694874a
154ee2cbc65
hex2fb40487e

12805228670 has 16 divisors (see below), whose sum is σ = 24822443520. Its totient is φ = 4728084384.

The previous prime is 12805228649. The next prime is 12805228693. The reversal of 12805228670 is 7682250821.

12805228670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49250750 + ... + 49251009.

It is an arithmetic number, because the mean of its divisors is an integer number (1551402720).

Almost surely, 212805228670 is an apocalyptic number.

12805228670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12805228670 is a deficient number, since it is larger than the sum of its proper divisors (12017214850).

12805228670 is a wasteful number, since it uses less digits than its factorization.

12805228670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98501779.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 12805228670 in words is "twelve billion, eight hundred five million, two hundred twenty-eight thousand, six hundred seventy".

Divisors: 1 2 5 10 13 26 65 130 98501759 197003518 492508795 985017590 1280522867 2561045734 6402614335 12805228670