1268390 has 8 divisors (see below), whose sum is σ = 2283120. Its totient is φ = 507352.

The previous prime is 1268369. The next prime is 1268413. The reversal of 1268390 is 938621.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 63410 + ... + 63429.

It is an arithmetic number, because the mean of its divisors is an integer number (285390).

2^1268390 is an apocalyptic number.

1268390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1268390 is a deficient number, since it is larger than the sum of its proper divisors (1014730).

1268390 is a wasteful number, since it uses less digits than its factorization.

1268390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126846.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1268390 is about 1126.2282184353. The cubic root of 1268390 is about 108.2474322329.

The spelling of 1268390 in words is "one million, two hundred sixty-eight thousand, three hundred ninety".