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18228250080672 = 253409464248423
BaseRepresentation
bin1000010010100000110000…
…10111101111010110100000
32101112121022002102010112020
410021100120113233112200
54342122424010040142
6102433535324301440
73560643013134012
oct411203027572640
971477262363466
1018228250080672
115898614a63165
1220649100a1880
13a22bbba298c8
1447037573a1b2
1521925a4e1cec
hex1094185ef5a0

18228250080672 has 48 divisors (see below), whose sum is σ = 47966147167680. Its totient is φ = 6061227397632.

The previous prime is 18228250080643. The next prime is 18228250080683. The reversal of 18228250080672 is 27608005282281.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232084948 + ... + 232163475.

It is an arithmetic number, because the mean of its divisors is an integer number (999294732660).

Almost surely, 218228250080672 is an apocalyptic number.

18228250080672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18228250080672 is an abundant number, since it is smaller than the sum of its proper divisors (29737897087008).

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

18228250080672 is a wasteful number, since it uses less digits than its factorization.

18228250080672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464248845 (or 464248837 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 18228250080672 in words is "eighteen trillion, two hundred twenty-eight billion, two hundred fifty million, eighty thousand, six hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 409 818 1227 1636 2454 3272 4908 6544 9816 13088 19632 39264 464248423 928496846 1392745269 1856993692 2785490538 3713987384 5570981076 7427974768 11141962152 14855949536 22283924304 44567848608 189877605007 379755210014 569632815021 759510420028 1139265630042 1519020840056 2278531260084 3038041680112 4557062520168 6076083360224 9114125040336 18228250080672