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18069800 = 2352712907
BaseRepresentation
bin100010011101…
…1100100101000
31021000001002212
41010323210220
514111213200
61443144252
7306406430
oct104734450
937001085
1018069800
11a222121
126075088
1339889b8
1425852c0
1518be035
hex113b928

18069800 has 48 divisors (see below), whose sum is σ = 48017760. Its totient is φ = 6194880.

The previous prime is 18069791. The next prime is 18069823. The reversal of 18069800 is 896081.

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, 5054 + ... + 7853.

It is an arithmetic number, because the mean of its divisors is an integer number (1000370).

Almost surely, 218069800 is an apocalyptic number.

18069800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18069800 is an abundant number, since it is smaller than the sum of its proper divisors (29947960).

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

18069800 is a wasteful number, since it uses less digits than its factorization.

18069800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12930 (or 12921 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 18069800 is about 4250.8587367731. The cubic root of 18069800 is about 262.4124575808.

The spelling of 18069800 in words is "eighteen million, sixty-nine thousand, eight hundred".

Divisors: 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 100 140 175 200 280 350 700 1400 12907 25814 51628 64535 90349 103256 129070 180698 258140 322675 361396 451745 516280 645350 722792 903490 1290700 1806980 2258725 2581400 3613960 4517450 9034900 18069800