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12839824844 = 2271141687743
BaseRepresentation
bin10111111010101000…
…00010110111001100
31020010211101200110022
423331110002313030
5202243443343334
65522030001312
7633116465450
oct137524026714
936124350408
1012839824844
1154998234a0
1225a4046238
13129814c5c2
1489b392660
1550236282e
hex2fd502dcc

12839824844 has 24 divisors (see below), whose sum is σ = 28014163968. Its totient is φ = 5002529040.

The previous prime is 12839824843. The next prime is 12839824847. The reversal of 12839824844 is 44842893821.

It is a super-2 number, since 2×128398248442 (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12839824843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20843564 + ... + 20844179.

It is an arithmetic number, because the mean of its divisors is an integer number (1167256832).

Almost surely, 212839824844 is an apocalyptic number.

12839824844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12839824844 is an abundant number, since it is smaller than the sum of its proper divisors (15174339124).

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

12839824844 is a wasteful number, since it uses less digits than its factorization.

12839824844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41687765 (or 41687763 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 53.

The spelling of 12839824844 in words is "twelve billion, eight hundred thirty-nine million, eight hundred twenty-four thousand, eight hundred forty-four".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 41687743 83375486 166750972 291814201 458565173 583628402 917130346 1167256804 1834260692 3209956211 6419912422 12839824844