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105408680 = 23513231503
BaseRepresentation
bin1100100100001…
…10100010101000
321100100022112012
412102012202220
5203441034210
614243135052
72416646636
oct622064250
9240308465
10105408680
1154556113
122b374488
1318ab8600
14dddc356
1593c2305
hex64868a8

105408680 has 96 divisors (see below), whose sum is σ = 265628160. Its totient is φ = 37589760.

The previous prime is 105408647. The next prime is 105408683. The reversal of 105408680 is 86804501.

It is a super-2 number, since 2×1054086802 = 22221979638684800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105408683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209309 + ... + 209811.

It is an arithmetic number, because the mean of its divisors is an integer number (2766960).

Almost surely, 2105408680 is an apocalyptic number.

105408680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105408680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132814080).

105408680 is an abundant number, since it is smaller than the sum of its proper divisors (160219480).

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

105408680 is a wasteful number, since it uses less digits than its factorization.

105408680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 105408680 is about 10266.8729416507. The cubic root of 105408680 is about 472.3806777632.

The spelling of 105408680 in words is "one hundred five million, four hundred eight thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 13 20 26 31 40 52 62 65 104 124 130 155 169 248 260 310 338 403 503 520 620 676 806 845 1006 1240 1352 1612 1690 2012 2015 2515 3224 3380 4024 4030 5030 5239 6539 6760 8060 10060 10478 13078 15593 16120 20120 20956 26156 26195 31186 32695 41912 52312 52390 62372 65390 77965 85007 104780 124744 130780 155930 170014 202709 209560 261560 311860 340028 405418 425035 623720 680056 810836 850070 1013545 1621672 1700140 2027090 2635217 3400280 4054180 5270434 8108360 10540868 13176085 21081736 26352170 52704340 105408680