12890293 has 8 divisors (see below), whose sum is σ = 13923000. Its totient is φ = 11863488.

The previous prime is 12890291. The next prime is 12890299. The reversal of 12890293 is 39209821.

It can be written as a sum of positive squares in 4 ways, for example, as 1214404 + 11675889 = 1102^2 + 3417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12890293 - 2¹ = 12890291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12890291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3783 + ... + 6331.

It is an arithmetic number, because the mean of its divisors is an integer number (1740375).

Almost surely, 2^12890293 is an apocalyptic number.

12890293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12890293 is a deficient number, since it is larger than the sum of its proper divisors (1032707).

12890293 is a wasteful number, since it uses less digits than its factorization.

12890293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 12890293 is about 3590.3054187631. The cubic root of 12890293 is about 234.4701689481.

The spelling of 12890293 in words is "twelve million, eight hundred ninety thousand, two hundred ninety-three".