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6869818980 = 223651924799
BaseRepresentation
bin1100110010111100…
…10001111001100100
3122201202202222000000
412121132101321210
5103032133201410
63053404021300
7332145332523
oct63136217144
918652688000
106869818980
112a05919752
1213b8831830
13856355c5b
144925504ba
152a31a1dc0
hex199791e64

6869818980 has 168 divisors, whose sum is σ = 22769376000. Its totient is φ = 1735463232.

The previous prime is 6869818973. The next prime is 6869819039. The reversal of 6869818980 is 898189686.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 264621 + ... + 289419.

It is an arithmetic number, because the mean of its divisors is an integer number (135532000).

Almost surely, 26869818980 is an apocalyptic number.

6869818980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6869818980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11384688000).

6869818980 is an abundant number, since it is smaller than the sum of its proper divisors (15899557020).

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

6869818980 is a wasteful number, since it uses less digits than its factorization.

6869818980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24845 (or 24828 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 63.

The square root of 6869818980 is about 82884.3711443840. The cubic root of 6869818980 is about 1900.9984576707.

It can be divided in two parts, 68698 and 18980, that added together give a palindrome (87678).

The spelling of 6869818980 in words is "six billion, eight hundred sixty-nine million, eight hundred eighteen thousand, nine hundred eighty".