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13028281903 = 713143167933
BaseRepresentation
bin11000010001000101…
…11100111000101111
31020121222000021221101
430020202330320233
5203140220010103
65552441143531
7640565366110
oct141042747057
936558007841
1013028281903
11558614202a
12263718aba7
1312c81c4960
148b840c207
15513b8ba1d
hex3088bce2f

13028281903 has 8 divisors (see below), whose sum is σ = 16034808608. Its totient is φ = 10308091104.

The previous prime is 13028281879. The next prime is 13028281949. The reversal of 13028281903 is 30918282031.

13028281903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13028281903 - 229 = 12491410991 is a prime.

It is a super-2 number, since 2×130282819032 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13028281103) by changing a digit.

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, 71583876 + ... + 71584057.

It is an arithmetic number, because the mean of its divisors is an integer number (2004351076).

Almost surely, 213028281903 is an apocalyptic number.

13028281903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13028281903 is a deficient number, since it is larger than the sum of its proper divisors (3006526705).

13028281903 is a wasteful number, since it uses less digits than its factorization.

13028281903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143167953.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 13028281903 in words is "thirteen billion, twenty-eight million, two hundred eighty-one thousand, nine hundred three".

Divisors: 1 7 13 91 143167933 1002175531 1861183129 13028281903