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13869836900 = 2252138698369
BaseRepresentation
bin11001110101011010…
…01110101001100100
31022210121112201100222
430322231032221210
5211401134240100
610212142423512
71000464445163
oct147255165144
938717481328
1013869836900
115978185827
122830b91b98
1314006670aa
149580b33da
155629c1485
hex33ab4ea64

13869836900 has 18 divisors (see below), whose sum is σ = 30097546290. Its totient is φ = 5547934720.

The previous prime is 13869836899. The next prime is 13869836917. The reversal of 13869836900 is 963896831.

It can be written as a sum of positive squares in 3 ways, for example, as 25020004 + 13844816896 = 5002^2 + 117664^2 .

It is a super-2 number, since 2×138698369002 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69349085 + ... + 69349284.

It is an arithmetic number, because the mean of its divisors is an integer number (1672085905).

Almost surely, 213869836900 is an apocalyptic number.

13869836900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13869836900 is an abundant number, since it is smaller than the sum of its proper divisors (16227709390).

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

13869836900 is a wasteful number, since it uses less digits than its factorization.

13869836900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138698383 (or 138698376 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 13869836900 in words is "thirteen billion, eight hundred sixty-nine million, eight hundred thirty-six thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 138698369 277396738 554793476 693491845 1386983690 2773967380 3467459225 6934918450 13869836900