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105647648 = 25232792
BaseRepresentation
bin1100100110000…
…00111000100000
321100210110022212
412103000320200
5204021211043
614252221252
72421663431
oct623007040
9240713285
10105647648
11546a9707
122b46a828
1318b70302
1410061488
15941d018
hex64c0e20

105647648 has 54 divisors (see below), whose sum is σ = 220217319. Its totient is φ = 49887552.

The previous prime is 105647623. The next prime is 105647653. The reversal of 105647648 is 846746501.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 52823824 + 52823824 = 7268^2 + 7268^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=7268.

It is a super-2 number, since 2×1056476482 = 22322851055863808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1337273 + ... + 1337351.

Almost surely, 2105647648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105647648

105647648 is an abundant number, since it is smaller than the sum of its proper divisors (114569671).

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

105647648 is an frugal number, since it uses more digits than its factorization.

105647648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 105647648 is about 10278.5041713277. The cubic root of 105647648 is about 472.7373804186.

The spelling of 105647648 in words is "one hundred five million, six hundred forty-seven thousand, six hundred forty-eight".

Divisors: 1 2 4 8 16 23 32 46 79 92 158 184 316 368 529 632 736 1058 1264 1817 2116 2528 3634 4232 6241 7268 8464 12482 14536 16928 24964 29072 41791 49928 58144 83582 99856 143543 167164 199712 287086 334328 574172 668656 1148344 1337312 2296688 3301489 4593376 6602978 13205956 26411912 52823824 105647648