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18012246284 = 2230748730119
BaseRepresentation
bin10000110001100111…
…010001000100001100
31201111022012220202202
4100301213101010030
5243342113340114
612135200541032
71205234365364
oct206147210414
951438186682
1018012246284
11770349725a
1235a8321778
13191092a6c6
14c2c2d79a4
157064c6cde
hex4319d110c

18012246284 has 24 divisors (see below), whose sum is σ = 31690095360. Its totient is φ = 8958056976.

The previous prime is 18012246271. The next prime is 18012246331. The reversal of 18012246284 is 48264221081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582977 + ... + 613095.

It is an arithmetic number, because the mean of its divisors is an integer number (1320420640).

Almost surely, 218012246284 is an apocalyptic number.

It is an amenable number.

18012246284 is a deficient number, since it is larger than the sum of its proper divisors (13677849076).

18012246284 is a wasteful number, since it uses less digits than its factorization.

18012246284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30917 (or 30915 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The spelling of 18012246284 in words is "eighteen billion, twelve million, two hundred forty-six thousand, two hundred eighty-four".

Divisors: 1 2 4 307 487 614 974 1228 1948 30119 60238 120476 149509 299018 598036 9246533 14667953 18493066 29335906 36986132 58671812 4503061571 9006123142 18012246284