12280723 has 18 divisors (see below), whose sum is σ = 15479604. Its totient is φ = 9710064.

The previous prime is 12280721. The next prime is 12280733. The reversal of 12280723 is 32708221.

12280723 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 12280723 - 2¹ = 12280721 is a prime.

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 17 ways as a sum of consecutive naturals, for example, 7540 + ... + 9022.

It is an arithmetic number, because the mean of its divisors is an integer number (859978).

Almost surely, 2^12280723 is an apocalyptic number.

12280723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12280723 is a deficient number, since it is larger than the sum of its proper divisors (3198881).

12280723 is a wasteful number, since it uses less digits than its factorization.

12280723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12280723 is about 3504.3862515425. The cubic root of 12280723 is about 230.7143699533.

Adding to 12280723 its reverse (32708221), we get a palindrome (44988944).

The spelling of 12280723 in words is "twelve million, two hundred eighty thousand, seven hundred twenty-three".