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18895048288 = 254799712601
BaseRepresentation
bin10001100110001110…
…111000111001100000
31210202211100220110021
4101212032320321200
5302144113021123
612402534243224
71236144155224
oct214616707140
953684326407
1018895048288
118016842496
1237b3ab6514
131a217b215c
14cb3658784
15758c57c5d
hex4663b8e60

18895048288 has 48 divisors (see below), whose sum is σ = 38032231104. Its totient is φ = 9236505600.

The previous prime is 18895048253. The next prime is 18895048307. The reversal of 18895048288 is 88284059881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493188 + ... + 1505788.

It is an arithmetic number, because the mean of its divisors is an integer number (792338148).

Almost surely, 218895048288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18895048288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19016115552).

18895048288 is an abundant number, since it is smaller than the sum of its proper divisors (19137182816).

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

18895048288 is a wasteful number, since it uses less digits than its factorization.

18895048288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13655 (or 13647 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 61.

The spelling of 18895048288 in words is "eighteen billion, eight hundred ninety-five million, forty-eight thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 16 32 47 94 188 376 752 997 1504 1994 3988 7976 12601 15952 25202 31904 46859 50404 93718 100808 187436 201616 374872 403232 592247 749744 1184494 1499488 2368988 4737976 9475952 12563197 18951904 25126394 50252788 100505576 201011152 402022304 590470259 1180940518 2361881036 4723762072 9447524144 18895048288