12981950 has 12 divisors (see below), whose sum is σ = 24146520. Its totient is φ = 5192760.

The previous prime is 12981949. The next prime is 12981961. The reversal of 12981950 is 5918921.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12981950.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129770 + ... + 129869.

It is an arithmetic number, because the mean of its divisors is an integer number (2012210).

Almost surely, 2^12981950 is an apocalyptic number.

12981950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12981950 is a deficient number, since it is larger than the sum of its proper divisors (11164570).

12981950 is a wasteful number, since it uses less digits than its factorization.

12981950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259651 (or 259646 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 12981950 is about 3603.0473213656. The cubic root of 12981950 is about 235.0245937743.

It can be divided in two parts, 12981 and 950, that added together give a palindrome (13931).

The spelling of 12981950 in words is "twelve million, nine hundred eighty-one thousand, nine hundred fifty".