12280261 has 4 divisors (see below), whose sum is σ = 14034592. Its totient is φ = 10525932.

The previous prime is 12280249. The next prime is 12280271. The reversal of 12280261 is 16208221.

12280261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12280261 - 2¹³ = 12272069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877155 + ... + 877168.

It is an arithmetic number, because the mean of its divisors is an integer number (3508648).

Almost surely, 2^12280261 is an apocalyptic number.

It is an amenable number.

12280261 is a deficient number, since it is larger than the sum of its proper divisors (1754331).

12280261 is an equidigital number, since it uses as much as digits as its factorization.

12280261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754330.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12280261 is about 3504.3203335312. The cubic root of 12280261 is about 230.7114767638.

Adding to 12280261 its reverse (16208221), we get a palindrome (28488482).

The spelling of 12280261 in words is "twelve million, two hundred eighty thousand, two hundred sixty-one".