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18113265 = 325402517
BaseRepresentation
bin100010100011…
…0001011110001
31021002020201200
41011012023301
514114111030
61444121413
7306650232
oct105061361
937066650
1018113265
11a251845
126096269
1339a2711
142597089
1518cbd60
hex11462f1

18113265 has 12 divisors (see below), whose sum is σ = 31396404. Its totient is φ = 9660384.

The previous prime is 18113257. The next prime is 18113299. The reversal of 18113265 is 56231181.

It can be written as a sum of positive squares in 2 ways, for example, as 12873744 + 5239521 = 3588^2 + 2289^2 .

It is not a de Polignac number, because 18113265 - 23 = 18113257 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201214 + ... + 201303.

It is an arithmetic number, because the mean of its divisors is an integer number (2616367).

Almost surely, 218113265 is an apocalyptic number.

18113265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18113265 is a deficient number, since it is larger than the sum of its proper divisors (13283139).

18113265 is a wasteful number, since it uses less digits than its factorization.

18113265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402528 (or 402525 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 18113265 is about 4255.9681624749. The cubic root of 18113265 is about 262.6226909454.

The spelling of 18113265 in words is "eighteen million, one hundred thirteen thousand, two hundred sixty-five".

Divisors: 1 3 5 9 15 45 402517 1207551 2012585 3622653 6037755 18113265