1279598428 has 18 divisors (see below), whose sum is σ = 2273250336. Its totient is φ = 630241128.

The previous prime is 1279598413. The next prime is 1279598447. The reversal of 1279598428 is 8248959721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17676 + ... + 53587.

Almost surely, 2^1279598428 is an apocalyptic number.

It is an amenable number.

1279598428 is a deficient number, since it is larger than the sum of its proper divisors (993651908).

1279598428 is an equidigital number, since it uses as much as digits as its factorization.

1279598428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71401 (or 71332 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The square root of 1279598428 is about 35771.4750604445. The cubic root of 1279598428 is about 1085.6534895419.

The spelling of 1279598428 in words is "one billion, two hundred seventy-nine million, five hundred ninety-eight thousand, four hundred twenty-eight".