1280198 has 4 divisors (see below), whose sum is σ = 1920300. Its totient is φ = 640098.

The previous prime is 1280183. The next prime is 1280221. The reversal of 1280198 is 8910821.

It is a semiprime because it is the product of two primes.

1280198 is a modest number, since divided by 198 gives 128 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1280198.

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, 320048 + ... + 320051.

It is an arithmetic number, because the mean of its divisors is an integer number (480075).

2^1280198 is an apocalyptic number.

1280198 is a deficient number, since it is larger than the sum of its proper divisors (640102).

1280198 is an equidigital number, since it uses as much as digits as its factorization.

1280198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640101.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1280198 is about 1131.4583509789. The cubic root of 1280198 is about 108.5823028615.

The spelling of 1280198 in words is "one million, two hundred eighty thousand, one hundred ninety-eight".