12520346 has 8 divisors (see below), whose sum is σ = 18863220. Its totient is φ = 6232608.

The previous prime is 12520337. The next prime is 12520351. The reversal of 12520346 is 64302521.

It can be written as a sum of positive squares in 2 ways, for example, as 9369721 + 3150625 = 3061^2 + 1775^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13211 + ... + 14126.

Almost surely, 2^12520346 is an apocalyptic number.

12520346 is a deficient number, since it is larger than the sum of its proper divisors (6342874).

12520346 is a wasteful number, since it uses less digits than its factorization.

12520346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27568.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 12520346 is about 3538.4100949438. The cubic root of 12520346 is about 232.2052904467.

Adding to 12520346 its reverse (64302521), we get a palindrome (76822867).

The spelling of 12520346 in words is "twelve million, five hundred twenty thousand, three hundred forty-six".