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13885137888 = 253672158759
BaseRepresentation
bin11001110111001111…
…00110001111100000
31022211200100002101020
430323213212033200
5211414043403023
610213450405440
71001041503366
oct147347461740
938750302336
1013885137888
115985886676
122836130880
13140389372b
1495a137636
15563ee4de3
hex33b9e63e0

13885137888 has 48 divisors (see below), whose sum is σ = 36992511360. Its totient is φ = 4559296896.

The previous prime is 13885137839. The next prime is 13885137899. The reversal of 13885137888 is 88873158831.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 1072948 + ... + 1085811.

It is an arithmetic number, because the mean of its divisors is an integer number (770677320).

Almost surely, 213885137888 is an apocalyptic number.

It is an amenable number.

13885137888 is an abundant number, since it is smaller than the sum of its proper divisors (23107373472).

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

13885137888 is a wasteful number, since it uses less digits than its factorization.

13885137888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158839 (or 2158831 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 60.

The spelling of 13885137888 in words is "thirteen billion, eight hundred eighty-five million, one hundred thirty-seven thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 67 96 134 201 268 402 536 804 1072 1608 2144 3216 6432 2158759 4317518 6476277 8635036 12952554 17270072 25905108 34540144 51810216 69080288 103620432 144636853 207240864 289273706 433910559 578547412 867821118 1157094824 1735642236 2314189648 3471284472 4628379296 6942568944 13885137888