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13481292888 = 233378916199
BaseRepresentation
bin11001000111000110…
…00011010001011000
31021210112102122012000
430203203003101120
5210102202333023
610105422521000
7655036045620
oct144343032130
937715378160
1013481292888
115798924978
122742a36160
13136b006cab
1491c651880
1553d822243
hex3238c3458

13481292888 has 64 divisors (see below), whose sum is σ = 42797760000. Its totient is φ = 3851797536.

The previous prime is 13481292857. The next prime is 13481292907. The reversal of 13481292888 is 88829218431.

13481292888 is a `hidden beast` number, since 1 + 348 + 1 + 292 + 8 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

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, 4456588 + ... + 4459611.

It is an arithmetic number, because the mean of its divisors is an integer number (668715000).

Almost surely, 213481292888 is an apocalyptic number.

13481292888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13481292888 is an abundant number, since it is smaller than the sum of its proper divisors (29316467112).

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

13481292888 is a wasteful number, since it uses less digits than its factorization.

13481292888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8916221 (or 8916211 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 54.

The spelling of 13481292888 in words is "thirteen billion, four hundred eighty-one million, two hundred ninety-two thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 84 108 126 168 189 216 252 378 504 756 1512 8916199 17832398 26748597 35664796 53497194 62413393 71329592 80245791 106994388 124826786 160491582 187240179 213988776 240737373 249653572 320983164 374480358 481474746 499307144 561720537 641966328 748960716 962949492 1123441074 1497921432 1685161611 1925898984 2246882148 3370323222 4493764296 6740646444 13481292888