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12420487630 = 252339531017
BaseRepresentation
bin10111001000101000…
…11001100111001110
31012001121100010221101
423210110121213032
5200414121101010
65412250053314
7616535255125
oct134424314716
935047303841
1012420487630
1152a4050211
1224a771a23a
13122c2ca485
1485b7d6abc
154ca62e73a
hex2e45199ce

12420487630 has 16 divisors (see below), whose sum is σ = 22366478160. Its totient is φ = 4966061632.

The previous prime is 12420487567. The next prime is 12420487631. The reversal of 12420487630 is 3678402421.

12420487630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12420487630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420487631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242119 + ... + 288898.

It is an arithmetic number, because the mean of its divisors is an integer number (1397904885).

Almost surely, 212420487630 is an apocalyptic number.

12420487630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12420487630 is a deficient number, since it is larger than the sum of its proper divisors (9945990530).

12420487630 is a wasteful number, since it uses less digits than its factorization.

12420487630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533363.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 12420487630 in words is "twelve billion, four hundred twenty million, four hundred eighty-seven thousand, six hundred thirty".

Divisors: 1 2 5 10 2339 4678 11695 23390 531017 1062034 2655085 5310170 1242048763 2484097526 6210243815 12420487630