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18288490192 = 247971683403
BaseRepresentation
bin10001000010000101…
…000011011011010000
31202012120000120011121
4101002011003123100
5244423323141232
612222425452024
71215130413250
oct210205033320
952176016147
1018288490192
117835415405
123664941014
131955c2b53b
14c56c85960
15720891d97
hex4421436d0

18288490192 has 40 divisors (see below), whose sum is σ = 40913450816. Its totient is φ = 7757116416.

The previous prime is 18288490177. The next prime is 18288490201. The reversal of 18288490192 is 29109488281.

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, 830838 + ... + 852565.

Almost surely, 218288490192 is an apocalyptic number.

It is an amenable number.

18288490192 is an abundant number, since it is smaller than the sum of its proper divisors (22624960624).

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

18288490192 is a wasteful number, since it uses less digits than its factorization.

18288490192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683515 (or 1683509 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 52.

The spelling of 18288490192 in words is "eighteen billion, two hundred eighty-eight million, four hundred ninety thousand, one hundred ninety-two".

Divisors: 1 2 4 7 8 14 16 28 56 97 112 194 388 679 776 1358 1552 2716 5432 10864 1683403 3366806 6733612 11783821 13467224 23567642 26934448 47135284 94270568 163290091 188541136 326580182 653160364 1143030637 1306320728 2286061274 2612641456 4572122548 9144245096 18288490192