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109382385 = 3571041737
BaseRepresentation
bin1101000010100…
…00101011110001
321121211012102110
412201100223301
5211000214020
614504235533
72465510040
oct641205361
9247735373
10109382385
115681a672
123076bba9
131987a208
1410754557
1599098e0
hex6850af1

109382385 has 16 divisors (see below), whose sum is σ = 200013696. Its totient is φ = 50003328.

The previous prime is 109382347. The next prime is 109382389. The reversal of 109382385 is 583283901.

It is not a de Polignac number, because 109382385 - 29 = 109381873 is a prime.

It is a super-2 number, since 2×1093823852 = 23929012296576450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109382389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520764 + ... + 520973.

It is an arithmetic number, because the mean of its divisors is an integer number (12500856).

Almost surely, 2109382385 is an apocalyptic number.

109382385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109382385 is a deficient number, since it is larger than the sum of its proper divisors (90631311).

109382385 is a wasteful number, since it uses less digits than its factorization.

109382385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041752.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 109382385 is about 10458.6033962475. The cubic root of 109382385 is about 478.2435588770.

The spelling of 109382385 in words is "one hundred nine million, three hundred eighty-two thousand, three hundred eighty-five".

Divisors: 1 3 5 7 15 21 35 105 1041737 3125211 5208685 7292159 15626055 21876477 36460795 109382385