12280726 has 16 divisors (see below), whose sum is σ = 19546560. Its totient is φ = 5770440.

The previous prime is 12280721. The next prime is 12280733. The reversal of 12280726 is 62708221.

It is a junction number, because it is equal to n+sod(n) for n = 12280694 and 12280703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3745 + ... + 6211.

It is an arithmetic number, because the mean of its divisors is an integer number (1221660).

Almost surely, 2^12280726 is an apocalyptic number.

12280726 is a deficient number, since it is larger than the sum of its proper divisors (7265834).

12280726 is a wasteful number, since it uses less digits than its factorization.

12280726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 12280726 is about 3504.3866795775. The cubic root of 12280726 is about 230.7143887400.

Adding to 12280726 its reverse (62708221), we get a palindrome (74988947).

The spelling of 12280726 in words is "twelve million, two hundred eighty thousand, seven hundred twenty-six".