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12754220 = 225637711
BaseRepresentation
bin110000101001…
…110100101100
3212222222111112
4300221310230
511231113340
61133211152
7213260213
oct60516454
925888445
1012754220
117221486
124330ab8
13284739b
1419a007a
1511be065
hexc29d2c

12754220 has 12 divisors (see below), whose sum is σ = 26783904. Its totient is φ = 5101680.

The previous prime is 12754219. The next prime is 12754271. The reversal of 12754220 is 2245721.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318836 + ... + 318875.

It is an arithmetic number, because the mean of its divisors is an integer number (2231992).

Almost surely, 212754220 is an apocalyptic number.

12754220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12754220 is an abundant number, since it is smaller than the sum of its proper divisors (14029684).

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

12754220 is a wasteful number, since it uses less digits than its factorization.

12754220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637720 (or 637718 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 12754220 is about 3571.3050835794. The cubic root of 12754220 is about 233.6422077280.

Adding to 12754220 its reverse (2245721), we get a palindrome (14999941).

The spelling of 12754220 in words is "twelve million, seven hundred fifty-four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 637711 1275422 2550844 3188555 6377110 12754220