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28505483049 = 311681813443
BaseRepresentation
bin11010100011000011…
…110010011100101001
32201120121002120112110
4122203003302130221
5431334400424144
621032323232533
72026251415401
oct324303623451
981517076473
1028505483049
11110a866935a
125636518749
1328c3872744
141545b71801
15b1c8140b9
hex6a30f2729

28505483049 has 8 divisors (see below), whose sum is σ = 38010611232. Its totient is φ = 19002005120.

The previous prime is 28505483009. The next prime is 28505483051. The reversal of 28505483049 is 94038450582.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-28505483049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28505482989 and 28505483007.

It is not an unprimeable number, because it can be changed into a prime (28505483009) 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, 371679 + ... + 441764.

It is an arithmetic number, because the mean of its divisors is an integer number (4751326404).

Almost surely, 228505483049 is an apocalyptic number.

It is an amenable number.

28505483049 is a deficient number, since it is larger than the sum of its proper divisors (9505128183).

28505483049 is a wasteful number, since it uses less digits than its factorization.

28505483049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825127.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 28505483049 in words is "twenty-eight billion, five hundred five million, four hundred eighty-three thousand, forty-nine".

Divisors: 1 3 11681 35043 813443 2440329 9501827683 28505483049