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13895812 = 2272312287
BaseRepresentation
bin110101000000…
…100010000100
3222010222110201
4311000202010
512024131222
61213500244
7226053400
oct65004204
928128421
1013895812
117931147
1247a1684
132b56b98
141bba100
151347427
hexd40884

13895812 has 36 divisors (see below), whose sum is σ = 29213184. Its totient is φ = 5760720.

The previous prime is 13895797. The next prime is 13895881. The reversal of 13895812 is 21859831.

It is a super-2 number, since 2×138958122 = 386187182278688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4933 + ... + 7219.

Almost surely, 213895812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13895812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14606592).

13895812 is an abundant number, since it is smaller than the sum of its proper divisors (15317372).

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

13895812 is a wasteful number, since it uses less digits than its factorization.

13895812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336 (or 2327 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 13895812 is about 3727.7086796047. The cubic root of 13895812 is about 240.4148611664.

The spelling of 13895812 in words is "thirteen million, eight hundred ninety-five thousand, eight hundred twelve".

Divisors: 1 2 4 7 14 28 31 49 62 98 124 196 217 434 868 1519 2287 3038 4574 6076 9148 16009 32018 64036 70897 112063 141794 224126 283588 448252 496279 992558 1985116 3473953 6947906 13895812