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12876290 = 257296343
BaseRepresentation
bin110001000111…
…101000000010
3220020011221122
4301013220002
511244020130
61135552242
7214306130
oct61075002
926204848
1012876290
1172a5169
12438b682
13288ab0b
1419d2750
1511e52e5
hexc47a02

12876290 has 32 divisors (see below), whose sum is σ = 27406080. Its totient is φ = 4261824.

The previous prime is 12876287. The next prime is 12876299. The reversal of 12876290 is 9267821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 12876290.

It is not an unprimeable number, because it can be changed into a prime (12876299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1142 + ... + 5201.

It is an arithmetic number, because the mean of its divisors is an integer number (856440).

Almost surely, 212876290 is an apocalyptic number.

12876290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12876290 is an abundant number, since it is smaller than the sum of its proper divisors (14529790).

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

12876290 is a wasteful number, since it uses less digits than its factorization.

12876290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 12876290 is about 3588.3547762171. The cubic root of 12876290 is about 234.3852348716.

The spelling of 12876290 in words is "twelve million, eight hundred seventy-six thousand, two hundred ninety".

Divisors: 1 2 5 7 10 14 29 35 58 70 145 203 290 406 1015 2030 6343 12686 31715 44401 63430 88802 183947 222005 367894 444010 919735 1287629 1839470 2575258 6438145 12876290