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28360668361 = 43661997807
BaseRepresentation
bin11010011010011011…
…010111010011001001
32201012111121020010111
4122122123113103021
5431040312341421
621010111314321
72022542463214
oct323233272311
981174536114
1028360668361
11110339489a3
1255b5b1b9a1
13289c86aa8c
14153083677b
15b0ec5aee1
hex69a6d74c9

28360668361 has 8 divisors (see below), whose sum is σ = 29064151424. Its totient is φ = 27659182320.

The previous prime is 28360668247. The next prime is 28360668367. The reversal of 28360668361 is 16386606382.

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 28360668361 - 29 = 28360667849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28360668367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470481 + ... + 527326.

It is an arithmetic number, because the mean of its divisors is an integer number (3633018928).

Almost surely, 228360668361 is an apocalyptic number.

It is an amenable number.

28360668361 is a deficient number, since it is larger than the sum of its proper divisors (703483063).

28360668361 is an equidigital number, since it uses as much as digits as its factorization.

28360668361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998511.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 28360668361 in words is "twenty-eight billion, three hundred sixty million, six hundred sixty-eight thousand, three hundred sixty-one".

Divisors: 1 43 661 28423 997807 42905701 659550427 28360668361