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12798547040 = 25579990919
BaseRepresentation
bin10111110101101101…
…00101010001100000
31020000221201112221202
423322312211101200
5202202412001130
65513553140332
7632105566136
oct137266452140
936027645852
1012798547040
11547849a904
12259225a6a8
13128c729276
14895ac9756
154ed90c145
hex2fada5460

12798547040 has 24 divisors (see below), whose sum is σ = 30236567760. Its totient is φ = 5119418752.

The previous prime is 12798547033. The next prime is 12798547103. The reversal of 12798547040 is 4074589721.

12798547040 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 3 ways as a sum of consecutive naturals, for example, 39995300 + ... + 39995619.

It is an arithmetic number, because the mean of its divisors is an integer number (1259856990).

Almost surely, 212798547040 is an apocalyptic number.

12798547040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12798547040 is an abundant number, since it is smaller than the sum of its proper divisors (17438020720).

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

12798547040 is an equidigital number, since it uses as much as digits as its factorization.

12798547040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79990934 (or 79990926 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 12798547040 in words is "twelve billion, seven hundred ninety-eight million, five hundred forty-seven thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 79990919 159981838 319963676 399954595 639927352 799909190 1279854704 1599818380 2559709408 3199636760 6399273520 12798547040