12290723 has 8 divisors (see below), whose sum is σ = 12503568. Its totient is φ = 12079584.

The previous prime is 12290713. The next prime is 12290737. The reversal of 12290723 is 32709221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12290723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12290692 and 12290701.

It is not an unprimeable number, because it can be changed into a prime (12290713) 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 7 ways as a sum of consecutive naturals, for example, 30761 + ... + 31157.

It is an arithmetic number, because the mean of its divisors is an integer number (1562946).

Almost surely, 2^12290723 is an apocalyptic number.

12290723 is a deficient number, since it is larger than the sum of its proper divisors (212845).

12290723 is an equidigital number, since it uses as much as digits as its factorization.

12290723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12290723 is about 3505.8127445715. The cubic root of 12290723 is about 230.7769753270.

Adding to 12290723 its reverse (32709221), we get a palindrome (44999944).

The spelling of 12290723 in words is "twelve million, two hundred ninety thousand, seven hundred twenty-three".