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18264975 = 352243533
BaseRepresentation
bin100010110101…
…1001110001111
31021100221211120
41011223032033
514133434400
61451252023
7311151441
oct105531617
937327746
1018264975
11a345823
12614a013
133a267a1
1425d6491
15190bca0
hex116b38f

18264975 has 12 divisors (see below), whose sum is σ = 30198216. Its totient is φ = 9741280.

The previous prime is 18264959. The next prime is 18264979. The reversal of 18264975 is 57946281.

It is not a de Polignac number, because 18264975 - 24 = 18264959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18264979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121692 + ... + 121841.

It is an arithmetic number, because the mean of its divisors is an integer number (2516518).

Almost surely, 218264975 is an apocalyptic number.

18264975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18264975 is a deficient number, since it is larger than the sum of its proper divisors (11933241).

18264975 is a wasteful number, since it uses less digits than its factorization.

18264975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243546 (or 243541 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 18264975 is about 4273.7542044437. The cubic root of 18264975 is about 263.3538635207.

The spelling of 18264975 in words is "eighteen million, two hundred sixty-four thousand, nine hundred seventy-five".

Divisors: 1 3 5 15 25 75 243533 730599 1217665 3652995 6088325 18264975