12490731 has 24 divisors (see below), whose sum is σ = 19796400. Its totient is φ = 7526400.

The previous prime is 12490729. The next prime is 12490741. The reversal of 12490731 is 13709421.

It is not a de Polignac number, because 12490731 - 2¹ = 12490729 is a prime.

It is a super-2 number, since 2×12490731² = 312036721828722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12490695 and 12490704.

It is not an unprimeable number, because it can be changed into a prime (12490711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27595 + ... + 28043.

It is an arithmetic number, because the mean of its divisors is an integer number (824850).

Almost surely, 2^12490731 is an apocalyptic number.

12490731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12490731 is a deficient number, since it is larger than the sum of its proper divisors (7305669).

12490731 is a wasteful number, since it uses less digits than its factorization.

12490731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12490731 is about 3534.2228282891. Note that the first 3 decimals coincide. The cubic root of 12490731 is about 232.0220636468.

The spelling of 12490731 in words is "twelve million, four hundred ninety thousand, seven hundred thirty-one".