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18905082 = 237264303
BaseRepresentation
bin100100000011…
…1011111111010
31022120110220020
41020013133322
514314430312
61513111310
7316455600
oct110073772
938513806
1018905082
11a742739
1263b8536
133bbbc51
142721870
1519d678c
hex12077fa

18905082 has 24 divisors (see below), whose sum is σ = 43983936. Its totient is φ = 5401368.

The previous prime is 18905053. The next prime is 18905087. The reversal of 18905082 is 28050981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18905087) 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, 31858 + ... + 32445.

It is an arithmetic number, because the mean of its divisors is an integer number (1832664).

Almost surely, 218905082 is an apocalyptic number.

18905082 is an abundant number, since it is smaller than the sum of its proper divisors (25078854).

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

18905082 is a wasteful number, since it uses less digits than its factorization.

18905082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64322 (or 64315 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 18905082 is about 4347.9974701005. The cubic root of 18905082 is about 266.3950731353.

The spelling of 18905082 in words is "eighteen million, nine hundred five thousand, eighty-two".

Divisors: 1 2 3 6 7 14 21 42 49 98 147 294 64303 128606 192909 385818 450121 900242 1350363 2700726 3150847 6301694 9452541 18905082