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108863120 = 2451360789
BaseRepresentation
bin1100111110100…
…01111010010000
321120211211010102
412133101322100
5210332104440
614445151532
72461215122
oct637217220
9246754112
10108863120
11564a5523
123055b5a8
1319727a62
141065b212
159855b15
hex67d1e90

108863120 has 20 divisors (see below), whose sum is σ = 253106940. Its totient is φ = 43545216.

The previous prime is 108863107. The next prime is 108863123. The reversal of 108863120 is 21368801.

It can be written as a sum of positive squares in 2 ways, for example, as 29724304 + 79138816 = 5452^2 + 8896^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×1088631202 = 23702357792268800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108863123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680315 + ... + 680474.

It is an arithmetic number, because the mean of its divisors is an integer number (12655347).

Almost surely, 2108863120 is an apocalyptic number.

108863120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108863120 is an abundant number, since it is smaller than the sum of its proper divisors (144243820).

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

108863120 is a wasteful number, since it uses less digits than its factorization.

108863120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360802 (or 1360796 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 108863120 is about 10433.7490864981. The cubic root of 108863120 is about 477.4855783589.

The spelling of 108863120 in words is "one hundred eight million, eight hundred sixty-three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1360789 2721578 5443156 6803945 10886312 13607890 21772624 27215780 54431560 108863120