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109508020 = 22519288179
BaseRepresentation
bin1101000011011…
…11010110110100
321122001120202121
412201233112310
5211013224040
614511045324
72466542236
oct641572664
9248046677
10109508020
11568a5aa6
1230810844
13198c245b
1410788256
159931c4a
hex686f5b4

109508020 has 24 divisors (see below), whose sum is σ = 242071200. Its totient is φ = 41497632.

The previous prime is 109508011. The next prime is 109508023. The reversal of 109508020 is 20805901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109508023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143710 + ... + 144469.

It is an arithmetic number, because the mean of its divisors is an integer number (10086300).

Almost surely, 2109508020 is an apocalyptic number.

109508020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109508020 is an abundant number, since it is smaller than the sum of its proper divisors (132563180).

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

109508020 is a wasteful number, since it uses less digits than its factorization.

109508020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288207 (or 288205 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 109508020 is about 10464.6079716347. The cubic root of 109508020 is about 478.4265899938.

The spelling of 109508020 in words is "one hundred nine million, five hundred eight thousand, twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 288179 576358 1152716 1440895 2881790 5475401 5763580 10950802 21901604 27377005 54754010 109508020