1273216 has 64 divisors (see below), whose sum is σ = 3060000. Its totient is φ = 526848.

The previous prime is 1273213. The next prime is 1273231. The reversal of 1273216 is 6123721.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43890 + ... + 43918.

2^1273216 is an apocalyptic number.

1273216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530000).

1273216 is an abundant number, since it is smaller than the sum of its proper divisors (1786784).

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

1273216 is an frugal number, since it uses more digits than its factorization.

1273216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 38 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 1273216 is about 1128.3687340582. The cubic root of 1273216 is about 108.3845459376.

Adding to 1273216 its reverse (6123721), we get a palindrome (7396937).

The spelling of 1273216 in words is "one million, two hundred seventy-three thousand, two hundred sixteen".