1268398 has 4 divisors (see below), whose sum is σ = 1902600. Its totient is φ = 634198.

The previous prime is 1268369. The next prime is 1268413. The reversal of 1268398 is 8938621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8938621 = 2087 ⋅4283.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317098 + ... + 317101.

It is an arithmetic number, because the mean of its divisors is an integer number (475650).

2^1268398 is an apocalyptic number.

1268398 is a deficient number, since it is larger than the sum of its proper divisors (634202).

1268398 is an equidigital number, since it uses as much as digits as its factorization.

1268398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634201.

The product of its digits is 20736, while the sum is 37.

The square root of 1268398 is about 1126.2317701077. The cubic root of 1268398 is about 108.2476598121.

The spelling of 1268398 in words is "one million, two hundred sixty-eight thousand, three hundred ninety-eight".