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12882270 = 235429409
BaseRepresentation
bin110001001001…
…000101011110
3220020111011010
4301021011132
511244213040
61140040050
7214332432
oct61110536
926214133
1012882270
1172a9705
124393026
13289075b
1419d49c2
1511e6e80
hexc4915e

12882270 has 16 divisors (see below), whose sum is σ = 30917520. Its totient is φ = 3435264.

The previous prime is 12882269. The next prime is 12882271. The reversal of 12882270 is 7228821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12882269) and next prime (12882271).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 429409 = 12882270 / (1 + 2 + 8 + 8 + 2 + 2 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12882271) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 214675 + ... + 214734.

It is an arithmetic number, because the mean of its divisors is an integer number (1932345).

Almost surely, 212882270 is an apocalyptic number.

12882270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12882270 is an abundant number, since it is smaller than the sum of its proper divisors (18035250).

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

12882270 is a wasteful number, since it uses less digits than its factorization.

12882270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429419.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 12882270 is about 3589.1879304377. The cubic root of 12882270 is about 234.4215136128.

The spelling of 12882270 in words is "twelve million, eight hundred eighty-two thousand, two hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 429409 858818 1288227 2147045 2576454 4294090 6441135 12882270