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12805914 = 2311231569
BaseRepresentation
bin110000110110…
…011100011010
3220002121102010
4300312130122
511234242124
61134250350
7213564012
oct60663432
926077363
1012805914
117257300
1243569b6
132864a84
1419b4c42
1511ce529
hexc3671a

12805914 has 48 divisors (see below), whose sum is σ = 29111040. Its totient is φ = 3748800.

The previous prime is 12805901. The next prime is 12805921. The reversal of 12805914 is 41950821.

It is a happy number.

12805914 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22222 + ... + 22790.

It is an arithmetic number, because the mean of its divisors is an integer number (606480).

Almost surely, 212805914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12805914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14555520).

12805914 is an abundant number, since it is smaller than the sum of its proper divisors (16305126).

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

12805914 is a wasteful number, since it uses less digits than its factorization.

12805914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 12805914 is about 3578.5351751799. The cubic root of 12805914 is about 233.9574398452.

The spelling of 12805914 in words is "twelve million, eight hundred five thousand, nine hundred fourteen".

Divisors: 1 2 3 6 11 22 31 33 62 66 93 121 186 242 341 363 569 682 726 1023 1138 1707 2046 3414 3751 6259 7502 11253 12518 17639 18777 22506 35278 37554 52917 68849 105834 137698 194029 206547 388058 413094 582087 1164174 2134319 4268638 6402957 12805914