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12550070 = 2513195081
BaseRepresentation
bin101111110111…
…111110110110
3212121121110102
4233313332312
511203100240
61124554102
7211450061
oct57677666
925547412
1012550070
1170a2065
124252932
1327a54a0
1419498d8
15117d815
hexbf7fb6

12550070 has 32 divisors (see below), whose sum is σ = 25613280. Its totient is φ = 4389120.

The previous prime is 12550061. The next prime is 12550073. The reversal of 12550070 is 7005521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550073) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 71 + ... + 5010.

It is an arithmetic number, because the mean of its divisors is an integer number (800415).

Almost surely, 212550070 is an apocalyptic number.

12550070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12550070 is an abundant number, since it is smaller than the sum of its proper divisors (13063210).

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

12550070 is a wasteful number, since it uses less digits than its factorization.

12550070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 12550070 is about 3542.6077965250. The cubic root of 12550070 is about 232.3889013277.

Adding to 12550070 its reverse (7005521), we get a palindrome (19555591).

The spelling of 12550070 in words is "twelve million, five hundred fifty thousand, seventy".

Divisors: 1 2 5 10 13 19 26 38 65 95 130 190 247 494 1235 2470 5081 10162 25405 50810 66053 96539 132106 193078 330265 482695 660530 965390 1255007 2510014 6275035 12550070