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18029050 = 2521327737
BaseRepresentation
bin100010011000…
…1100111111010
31020220222012121
41010301213322
514103412200
61442231454
7306146554
oct104614772
936828177
1018029050
11a1a4546
12605558a
1339732a0
1425744d4
1518b1e1a
hex11319fa

18029050 has 24 divisors (see below), whose sum is σ = 36114876. Its totient is φ = 6656640.

The previous prime is 18029041. The next prime is 18029051. The reversal of 18029050 is 5092081.

It can be written as a sum of positive squares in 6 ways, for example, as 6880129 + 11148921 = 2623^2 + 3339^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (18029051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13219 + ... + 14518.

Almost surely, 218029050 is an apocalyptic number.

18029050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18029050 is an abundant number, since it is smaller than the sum of its proper divisors (18085826).

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

18029050 is a wasteful number, since it uses less digits than its factorization.

18029050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27762 (or 27757 counting only the distinct ones).

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

The square root of 18029050 is about 4246.0628822475. The cubic root of 18029050 is about 262.2150498240.

The spelling of 18029050 in words is "eighteen million, twenty-nine thousand, fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 27737 55474 138685 277370 360581 693425 721162 1386850 1802905 3605810 9014525 18029050