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18124828 = 2223197009
BaseRepresentation
bin100010100100…
…1000000011100
31021002211120221
41011021000130
514114443303
61444251124
7310026031
oct105110034
937084527
1018124828
11a25a4a7
1260a0aa4
1339a7a67
14259b388
1518d04bd
hex114901c

18124828 has 12 divisors (see below), whose sum is σ = 33097680. Its totient is φ = 8668352.

The previous prime is 18124819. The next prime is 18124831. The reversal of 18124828 is 82842181.

It is a junction number, because it is equal to n+sod(n) for n = 18124793 and 18124802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98413 + ... + 98596.

It is an arithmetic number, because the mean of its divisors is an integer number (2758140).

Almost surely, 218124828 is an apocalyptic number.

It is an amenable number.

18124828 is a deficient number, since it is larger than the sum of its proper divisors (14972852).

18124828 is a wasteful number, since it uses less digits than its factorization.

18124828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197036 (or 197034 counting only the distinct ones).

The product of its digits is 8192, while the sum is 34.

The square root of 18124828 is about 4257.3263910581. The cubic root of 18124828 is about 262.6785627097.

The spelling of 18124828 in words is "eighteen million, one hundred twenty-four thousand, eight hundred twenty-eight".

Divisors: 1 2 4 23 46 92 197009 394018 788036 4531207 9062414 18124828