12819650 has 12 divisors (see below), whose sum is σ = 23844642. Its totient is φ = 5127840.

The previous prime is 12819643. The next prime is 12819659. The reversal of 12819650 is 5691821.

It can be written as a sum of positive squares in 3 ways, for example, as 10426441 + 2393209 = 3229^2 + 1547^2 .

It is a super-2 number, since 2×12819650² = 328686852245000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12819659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128147 + ... + 128246.

Almost surely, 2^12819650 is an apocalyptic number.

12819650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12819650 is a deficient number, since it is larger than the sum of its proper divisors (11024992).

12819650 is a wasteful number, since it uses less digits than its factorization.

12819650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256405 (or 256400 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 12819650 is about 3580.4538818424. The cubic root of 12819650 is about 234.0410598316.

The spelling of 12819650 in words is "twelve million, eight hundred nineteen thousand, six hundred fifty".