12811950 has 72 divisors (see below), whose sum is σ = 34993296. Its totient is φ = 3360000.

The previous prime is 12811937. The next prime is 12811957. The reversal of 12811950 is 5911821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811957) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31750 + ... + 32150.

It is an arithmetic number, because the mean of its divisors is an integer number (486018).

Almost surely, 2^12811950 is an apocalyptic number.

12811950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12811950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17496648).

12811950 is an abundant number, since it is smaller than the sum of its proper divisors (22181346).

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

12811950 is a wasteful number, since it uses less digits than its factorization.

12811950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 12811950 is about 3579.3784376620. The cubic root of 12811950 is about 233.9941922731.

The spelling of 12811950 in words is "twelve million, eight hundred eleven thousand, nine hundred fifty".