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18052368420 = 2235313795911
BaseRepresentation
bin10000110100000000…
…010100100000100100
31201121002201022222210
4100310000110200210
5243432401242140
612143152523420
71206232412502
oct206400244044
951532638883
1018052368420
117724100649
1235b9850570
131919037a08
14c3377d672
15709c9ed80
hex434014824

18052368420 has 48 divisors (see below), whose sum is σ = 50563271808. Its totient is φ = 4812380160.

The previous prime is 18052368419. The next prime is 18052368437. The reversal of 18052368420 is 2486325081.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140265 + ... + 236175.

It is an arithmetic number, because the mean of its divisors is an integer number (1053401496).

Almost surely, 218052368420 is an apocalyptic number.

18052368420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18052368420 is an abundant number, since it is smaller than the sum of its proper divisors (32510903388).

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

18052368420 is a wasteful number, since it uses less digits than its factorization.

18052368420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99060 (or 99058 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 18052368420 in words is "eighteen billion, fifty-two million, three hundred sixty-eight thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 3137 6274 9411 12548 15685 18822 31370 37644 47055 62740 94110 95911 188220 191822 287733 383644 479555 575466 959110 1150932 1438665 1918220 2877330 5754660 300872807 601745614 902618421 1203491228 1504364035 1805236842 3008728070 3610473684 4513092105 6017456140 9026184210 18052368420