1272216 has 64 divisors (see below), whose sum is σ = 3571200. Its totient is φ = 374400.

The previous prime is 1272211. The next prime is 1272223. The reversal of 1272216 is 6122721.

It is a junction number, because it is equal to n+sod(n) for n = 1272192 and 1272201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16065 + ... + 16143.

It is an arithmetic number, because the mean of its divisors is an integer number (55800).

2^1272216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1785600).

1272216 is an abundant number, since it is smaller than the sum of its proper divisors (2298984).

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

1272216 is a wasteful number, since it uses less digits than its factorization.

1272216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 156 counting only the distinct ones).

The product of its digits is 336, while the sum is 21.

The square root of 1272216 is about 1127.9255294566. The cubic root of 1272216 is about 108.3561629730.

Adding to 1272216 its reverse (6122721), we get a palindrome (7394937).

The spelling of 1272216 in words is "one million, two hundred seventy-two thousand, two hundred sixteen".