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238885000180 = 22543327584873
BaseRepresentation
bin1101111001111010100…
…1111101001111110100
3211211121022021100210021
43132132221331033310
512403214030001210
6301424154334524
723154535666321
oct3363651751764
9754538240707
10238885000180
119234639a392
123a36a12a444
13196b039b518
14b7c2567b48
156332110bda
hex379ea7d3f4

238885000180 has 24 divisors (see below), whose sum is σ = 502817083272. Its totient is φ = 95333317632.

The previous prime is 238885000153. The next prime is 238885000223. The reversal of 238885000180 is 81000588832.

It can be written as a sum of positive squares in 4 ways, for example, as 52008626916 + 186876373264 = 228054^2 + 432292^2 .

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, 13783777 + ... + 13801096.

It is an arithmetic number, because the mean of its divisors is an integer number (20950711803).

Almost surely, 2238885000180 is an apocalyptic number.

238885000180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238885000180 is an abundant number, since it is smaller than the sum of its proper divisors (263932083092).

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

238885000180 is a wasteful number, since it uses less digits than its factorization.

238885000180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27585315 (or 27585313 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 43.

The spelling of 238885000180 in words is "two hundred thirty-eight billion, eight hundred eighty-five million, one hundred eighty", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 433 866 1732 2165 4330 8660 27584873 55169746 110339492 137924365 275848730 551697460 11944250009 23888500018 47777000036 59721250045 119442500090 238885000180