12890146 has 8 divisors (see below), whose sum is σ = 19359900. Its totient is φ = 6436848.

The previous prime is 12890117. The next prime is 12890147. The reversal of 12890146 is 64109821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11868025 + 1022121 = 3445^2 + 1011^2 .

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

It is a super-3 number, since 3×12890146³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12890147) 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, 1921 + ... + 5428.

Almost surely, 2^12890146 is an apocalyptic number.

12890146 is a deficient number, since it is larger than the sum of its proper divisors (6469754).

12890146 is an equidigital number, since it uses as much as digits as its factorization.

12890146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8228.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 12890146 is about 3590.2849469088. The cubic root of 12890146 is about 234.4692776509.

Adding to 12890146 its reverse (64109821), we get a palindrome (76999967).

The spelling of 12890146 in words is "twelve million, eight hundred ninety thousand, one hundred forty-six".