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105248979 = 32113759487
BaseRepresentation
bin1100100010111…
…11100011010011
321100001012110100
412101133203103
5203420431404
614235503443
72415413223
oct621374323
9240035410
10105248979
1154457130
122b2b7b83
1318a60a04
14dd9a083
15938ed39
hex645f8d3

105248979 has 48 divisors (see below), whose sum is σ = 173571840. Its totient is φ = 60886080.

The previous prime is 105248971. The next prime is 105248987. The reversal of 105248979 is 979842501.

It is an interprime number because it is at equal distance from previous prime (105248971) and next prime (105248987).

It is not a de Polignac number, because 105248979 - 23 = 105248971 is a prime.

It is a super-2 number, since 2×1052489792 = 22154695161084882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105248971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 215874 + ... + 216360.

It is an arithmetic number, because the mean of its divisors is an integer number (3616080).

Almost surely, 2105248979 is an apocalyptic number.

105248979 is a deficient number, since it is larger than the sum of its proper divisors (68322861).

105248979 is a wasteful number, since it uses less digits than its factorization.

105248979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 105248979 is about 10259.0925037257. The cubic root of 105248979 is about 472.1419947079.

It can be divided in two parts, 10524 and 8979, that added together give a triangular number (19503 = T197).

The spelling of 105248979 in words is "one hundred five million, two hundred forty-eight thousand, nine hundred seventy-nine".

Divisors: 1 3 9 11 33 37 59 99 111 177 333 407 487 531 649 1221 1461 1947 2183 3663 4383 5357 5841 6549 16071 18019 19647 24013 28733 48213 54057 72039 86199 162171 198209 216117 258597 316063 594627 948189 1063121 1783881 2844567 3189363 9568089 11694331 35082993 105248979