1279216 has 20 divisors (see below), whose sum is σ = 2624832. Its totient is φ = 601856.

The previous prime is 1279211. The next prime is 1279249. The reversal of 1279216 is 6129721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2080 + ... + 2623.

2^1279216 is an apocalyptic number.

1279216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1279216 is an abundant number, since it is smaller than the sum of its proper divisors (1345616).

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

1279216 is a wasteful number, since it uses less digits than its factorization.

1279216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4728 (or 4722 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 1279216 is about 1131.0243145043. The cubic root of 1279216 is about 108.5545323925.

The spelling of 1279216 in words is "one million, two hundred seventy-nine thousand, two hundred sixteen".