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18028265150 = 252771772
BaseRepresentation
bin10000110010100100…
…010111111010111110
31201112102100202112002
4100302210113322332
5243410213441100
612140532142302
71205520503540
oct206244277276
951472322462
1018028265150
117711538495
1235b1767992
131914048a1c
14c304a7690
15707add2d5
hex432917ebe

18028265150 has 36 divisors (see below), whose sum is σ = 38328281208. Its totient is φ = 6180258240.

The previous prime is 18028265147. The next prime is 18028265161. The reversal of 18028265150 is 5156282081.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 2508362 + ... + 2515538.

It is an arithmetic number, because the mean of its divisors is an integer number (1064674478).

Almost surely, 218028265150 is an apocalyptic number.

18028265150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18028265150 is an abundant number, since it is smaller than the sum of its proper divisors (20300016058).

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

18028265150 is an frugal number, since it uses more digits than its factorization.

18028265150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14373 (or 7191 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The spelling of 18028265150 in words is "eighteen billion, twenty-eight million, two hundred sixty-five thousand, one hundred fifty".

Divisors: 1 2 5 7 10 14 25 35 50 70 175 350 7177 14354 35885 50239 71770 100478 179425 251195 358850 502390 1255975 2511950 51509329 103018658 257546645 360565303 515093290 721130606 1287733225 1802826515 2575466450 3605653030 9014132575 18028265150