12781950 has 24 divisors (see below), whose sum is σ = 31699608. Its totient is φ = 3408480.

The previous prime is 12781939. The next prime is 12782009. The reversal of 12781950 is 5918721.

12781950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42457 + ... + 42756.

It is an arithmetic number, because the mean of its divisors is an integer number (1320817).

Almost surely, 2^12781950 is an apocalyptic number.

12781950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12781950 is an abundant number, since it is smaller than the sum of its proper divisors (18917658).

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

12781950 is a wasteful number, since it uses less digits than its factorization.

12781950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85228 (or 85223 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12781950 is about 3575.1853098826. The cubic root of 12781950 is about 233.8114120814.

It can be divided in two parts, 12781 and 950, that added together give a palindrome (13731).

The spelling of 12781950 in words is "twelve million, seven hundred eighty-one thousand, nine hundred fifty".