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12290 = 251229

12290 has 8 divisors (see below), whose sum is σ = 22140. Its totient is φ = 4912.

The previous prime is 12289. The next prime is 12301. The reversal of 12290 is 9221.

It can be divided in two parts, 122 and 90, that added together give a palindrome (212).

12290 = 632 + 642 + 652.

It can be written as a sum of positive squares in 2 ways, for example, as 11449 + 841 = 107^2 + 29^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605 + ... + 624.

212290 is an apocalyptic number.

12290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12290 is a deficient number, since it is larger than the sum of its proper divisors (9850).

12290 is a wasteful number, since it uses less digits than its factorization.

12290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 12290 is about 110.8602724153. The cubic root of 12290 is about 23.0772450098.

The spelling of 12290 in words is "twelve thousand, two hundred ninety".

Divisors: 1 2 5 10 1229 2458 6145 12290