12681330 has 16 divisors (see below), whose sum is σ = 30435264. Its totient is φ = 3381680.

The previous prime is 12681329. The next prime is 12681353. The reversal of 12681330 is 3318621.

It is a super-2 number, since 2×12681330² = 321632261137800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12681330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211326 + ... + 211385.

It is an arithmetic number, because the mean of its divisors is an integer number (1902204).

Almost surely, 2^12681330 is an apocalyptic number.

12681330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12681330 is an abundant number, since it is smaller than the sum of its proper divisors (17753934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12681330 is a wasteful number, since it uses less digits than its factorization.

12681330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422721.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 12681330 is about 3561.0855086616. The cubic root of 12681330 is about 233.1962709779.

Adding to 12681330 its reverse (3318621), we get a palindrome (15999951).

The spelling of 12681330 in words is "twelve million, six hundred eighty-one thousand, three hundred thirty".