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1869224980 = 225731430697
BaseRepresentation
bin110111101101010…
…0001110000010100
311211021021110121211
41233122201300110
512312010144410
6505251551204
764215102340
oct15732416024
94737243554
101869224980
1187a146437
12441bbb504
1323a349bac
1413a376620
15ae17e68a
hex6f6a1c14

1869224980 has 48 divisors (see below), whose sum is σ = 4630864896. Its totient is φ = 620202240.

The previous prime is 1869224969. The next prime is 1869224999. The reversal of 1869224980 is 894229681.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 211009 + ... + 219688.

It is an arithmetic number, because the mean of its divisors is an integer number (96476352).

Almost surely, 21869224980 is an apocalyptic number.

1869224980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1869224980 is an abundant number, since it is smaller than the sum of its proper divisors (2761639916).

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

1869224980 is a wasteful number, since it uses less digits than its factorization.

1869224980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430744 (or 430742 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 1869224980 is about 43234.5345759614. The cubic root of 1869224980 is about 1231.8387419299.

The spelling of 1869224980 in words is "one billion, eight hundred sixty-nine million, two hundred twenty-four thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 31 35 62 70 124 140 155 217 310 434 620 868 1085 2170 4340 430697 861394 1722788 2153485 3014879 4306970 6029758 8613940 12059516 13351607 15074395 26703214 30148790 53406428 60297580 66758035 93461249 133516070 186922498 267032140 373844996 467306245 934612490 1869224980