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30105006 = 23191811459
BaseRepresentation
bin111001011010…
…1110110101110
32002122111022020
41302311312232
530201330011
62553131010
7513613461
oct162656656
962574266
1030105006
1115aa2378
12a0b9a66
136310a19
143dd92d8
15299a006
hex1cb5dae

30105006 has 32 divisors (see below), whose sum is σ = 63772800. Its totient is φ = 9447840.

The previous prime is 30104989. The next prime is 30105059. The reversal of 30105006 is 60050103.

It is a super-2 number, since 2×301050062 = 1812622772520072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19905 + ... + 21363.

It is an arithmetic number, because the mean of its divisors is an integer number (1992900).

Almost surely, 230105006 is an apocalyptic number.

30105006 is an abundant number, since it is smaller than the sum of its proper divisors (33667794).

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

30105006 is a wasteful number, since it uses less digits than its factorization.

30105006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 30105006 is about 5486.8028942181. The cubic root of 30105006 is about 311.0853596127.

Adding to 30105006 its reverse (60050103), we get a palindrome (90155109).

The spelling of 30105006 in words is "thirty million, one hundred five thousand, six".

Divisors: 1 2 3 6 19 38 57 114 181 362 543 1086 1459 2918 3439 4377 6878 8754 10317 20634 27721 55442 83163 166326 264079 528158 792237 1584474 5017501 10035002 15052503 30105006