1279656 has 48 divisors (see below), whose sum is σ = 3962400. Its totient is φ = 365472.

The previous prime is 1279643. The next prime is 1279657. The reversal of 1279656 is 6569721.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1279656.

It is not an unprimeable number, because it can be changed into a prime (1279657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 766 + ... + 1773.

It is an arithmetic number, because the mean of its divisors is an integer number (82550).

2^1279656 is an apocalyptic number.

It is an amenable number.

1279656 is an abundant number, since it is smaller than the sum of its proper divisors (2682744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1279656 is a wasteful number, since it uses less digits than its factorization.

1279656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558 (or 2551 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 1279656 is about 1131.2188117248. The cubic root of 1279656 is about 108.5669771292.

The spelling of 1279656 in words is "one million, two hundred seventy-nine thousand, six hundred fifty-six".