1280938 has 8 divisors (see below), whose sum is σ = 1962432. Its totient is φ = 626796.

The previous prime is 1280921. The next prime is 1280947. The reversal of 1280938 is 8390821.

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

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, 6720 + ... + 6907.

It is an arithmetic number, because the mean of its divisors is an integer number (245304).

2^1280938 is an apocalyptic number.

1280938 is a deficient number, since it is larger than the sum of its proper divisors (681494).

1280938 is a wasteful number, since it uses less digits than its factorization.

1280938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13676.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1280938 is about 1131.7853153315. The cubic root of 1280938 is about 108.6032203100.

The spelling of 1280938 in words is "one million, two hundred eighty thousand, nine hundred thirty-eight".