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18032490012 = 2237211208391
BaseRepresentation
bin10000110010110100…
…011111011000011100
31201112201022101221110
4100302310133120130
5243412304140022
612141202502020
71205601431115
oct206264373034
951481271843
1018032490012
117713963709
1235b3064910
131914b97a44
14c30c8720c
1570817500c
hex432d1f61c

18032490012 has 24 divisors (see below), whose sum is σ = 42081846912. Its totient is φ = 6009967600.

The previous prime is 18032490001. The next prime is 18032490017. The reversal of 18032490012 is 21009423081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18032490017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17664 + ... + 190727.

It is an arithmetic number, because the mean of its divisors is an integer number (1753410288).

Almost surely, 218032490012 is an apocalyptic number.

18032490012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18032490012 is an abundant number, since it is smaller than the sum of its proper divisors (24049356900).

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

18032490012 is a wasteful number, since it uses less digits than its factorization.

18032490012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215609 (or 215607 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 18032490012 in words is "eighteen billion, thirty-two million, four hundred ninety thousand, twelve".

Divisors: 1 2 3 4 6 12 7211 14422 21633 28844 43266 86532 208391 416782 625173 833564 1250346 2500692 1502707501 3005415002 4508122503 6010830004 9016245006 18032490012