12731450 has 24 divisors (see below), whose sum is σ = 23954940. Its totient is φ = 5033600.

The previous prime is 12731449. The next prime is 12731471. The reversal of 12731450 is 5413721.

It can be written as a sum of positive squares in 6 ways, for example, as 3003289 + 9728161 = 1733^2 + 3119^2 .

It is a Curzon 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, 3020 + ... + 5880.

Almost surely, 2^12731450 is an apocalyptic number.

12731450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12731450 is a deficient number, since it is larger than the sum of its proper divisors (11223490).

12731450 is a wasteful number, since it uses less digits than its factorization.

12731450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962 (or 2957 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12731450 is about 3568.1157492436. The cubic root of 12731450 is about 233.5030850911.

The spelling of 12731450 in words is "twelve million, seven hundred thirty-one thousand, four hundred fifty".