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28386601113 = 3132832571949
BaseRepresentation
bin11010011011111110…
…010010100010011001
32201021022101202011210
4122123332102202121
5431113432213423
621012435213333
72023306062003
oct323376224231
981238352153
1028386601113
1111047550622
125602747249
1328a504a6c0
141534067373
15b1217eb93
hex69bf92899

28386601113 has 16 divisors (see below), whose sum is σ = 40904292800. Its totient is φ = 17406944064.

The previous prime is 28386601073. The next prime is 28386601123. The reversal of 28386601113 is 31110668382.

It is not a de Polignac number, because 28386601113 - 29 = 28386600601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28386601123) 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 15 ways as a sum of consecutive naturals, for example, 1274938 + ... + 1297011.

It is an arithmetic number, because the mean of its divisors is an integer number (2556518300).

Almost surely, 228386601113 is an apocalyptic number.

It is an amenable number.

28386601113 is a deficient number, since it is larger than the sum of its proper divisors (12517691687).

28386601113 is a wasteful number, since it uses less digits than its factorization.

28386601113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572248.

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 28386601113 in words is "twenty-eight billion, three hundred eighty-six million, six hundred one thousand, one hundred thirteen".

Divisors: 1 3 13 39 283 849 3679 11037 2571949 7715847 33435337 100306011 727861567 2183584701 9462200371 28386601113