12290746 has 8 divisors (see below), whose sum is σ = 19854324. Its totient is φ = 5672640.

The previous prime is 12290743. The next prime is 12290749. The reversal of 12290746 is 64709221.

It is an interprime number because it is at equal distance from previous prime (12290743) and next prime (12290749).

It can be written as a sum of positive squares in 2 ways, for example, as 9090225 + 3200521 = 3015^2 + 1789^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12290743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236335 + ... + 236386.

Almost surely, 2^12290746 is an apocalyptic number.

12290746 is a deficient number, since it is larger than the sum of its proper divisors (7563578).

12290746 is a wasteful number, since it uses less digits than its factorization.

12290746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472736.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 12290746 is about 3505.8160248364. The cubic root of 12290746 is about 230.7771192802. Note that the first 3 decimals are identical.

Adding to 12290746 its reverse (64709221), we get a palindrome (76999967).

The spelling of 12290746 in words is "twelve million, two hundred ninety thousand, seven hundred forty-six".