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105215068 = 2274498369
BaseRepresentation
bin1100100010101…
…11010001011100
321022222110221101
412101113101130
5203413340233
614235042444
72415212320
oct621272134
9238873841
10105215068
1154433702
122b2a0424
1318a4b44a
14dd8b980
159384c7d
hex645745c

105215068 has 24 divisors (see below), whose sum is σ = 210924000. Its totient is φ = 44986368.

The previous prime is 105215059. The next prime is 105215069. The reversal of 105215068 is 860512501.

It is a super-2 number, since 2×1052150682 = 22140421068489248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105215069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8388 + ... + 16756.

It is an arithmetic number, because the mean of its divisors is an integer number (8788500).

Almost surely, 2105215068 is an apocalyptic number.

It is an amenable number.

105215068 is an abundant number, since it is smaller than the sum of its proper divisors (105708932).

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

105215068 is a wasteful number, since it uses less digits than its factorization.

105215068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8829 (or 8827 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 105215068 is about 10257.4396415480. The cubic root of 105215068 is about 472.0912815413.

Adding to 105215068 its reverse (860512501), we get a palindrome (965727569).

The spelling of 105215068 in words is "one hundred five million, two hundred fifteen thousand, sixty-eight".

Divisors: 1 2 4 7 14 28 449 898 1796 3143 6286 8369 12572 16738 33476 58583 117166 234332 3757681 7515362 15030724 26303767 52607534 105215068