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18052930 = 2572311213
BaseRepresentation
bin100010011011…
…1011101000010
31020222011222001
41010313131002
514110143210
61442534214
7306306310
oct104673502
936864861
1018052930
11a210485
12606736a
13398110c
14257d0b0
1518b903a
hex1137742

18052930 has 32 divisors (see below), whose sum is σ = 38755584. Its totient is φ = 5919936.

The previous prime is 18052897. The next prime is 18052939. The reversal of 18052930 is 3925081.

It is not an unprimeable number, because it can be changed into a prime (18052939) 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, 3997 + ... + 7216.

It is an arithmetic number, because the mean of its divisors is an integer number (1211112).

Almost surely, 218052930 is an apocalyptic number.

18052930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18052930 is an abundant number, since it is smaller than the sum of its proper divisors (20702654).

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

18052930 is a wasteful number, since it uses less digits than its factorization.

18052930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11250.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 18052930 is about 4248.8739684768. The cubic root of 18052930 is about 262.3307692292.

The spelling of 18052930 in words is "eighteen million, fifty-two thousand, nine hundred thirty".

Divisors: 1 2 5 7 10 14 23 35 46 70 115 161 230 322 805 1610 11213 22426 56065 78491 112130 156982 257899 392455 515798 784910 1289495 1805293 2578990 3610586 9026465 18052930