1268290 has 16 divisors (see below), whose sum is σ = 2326968. Its totient is φ = 497536.

The previous prime is 1268287. The next prime is 1268291. The reversal of 1268290 is 928621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 779689 + 488601 = 883^2 + 699^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667 + ... + 1726.

2^1268290 is an apocalyptic number.

1268290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1268290 is a deficient number, since it is larger than the sum of its proper divisors (1058678).

1268290 is a wasteful number, since it uses less digits than its factorization.

1268290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1268290 is about 1126.1838215851. The cubic root of 1268290 is about 108.2445874118.

The spelling of 1268290 in words is "one million, two hundred sixty-eight thousand, two hundred ninety".