12990346 has 8 divisors (see below), whose sum is σ = 20631780. Its totient is φ = 6113088.

The previous prime is 12990323. The next prime is 12990361. The reversal of 12990346 is 64309921.

12990346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10634121 + 2356225 = 3261^2 + 1535^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 382069 = 12990346 / (1 + 2 + 9 + 9 + 0 + 3 + 4 + 6).

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, 191001 + ... + 191068.

Almost surely, 2^12990346 is an apocalyptic number.

12990346 is a deficient number, since it is larger than the sum of its proper divisors (7641434).

12990346 is a wasteful number, since it uses less digits than its factorization.

12990346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382088.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 12990346 is about 3604.2122579005. The cubic root of 12990346 is about 235.0752497811.

The spelling of 12990346 in words is "twelve million, nine hundred ninety thousand, three hundred forty-six".