1371216 has 120 divisors (see below), whose sum is σ = 4580064. Its totient is φ = 349440.

The previous prime is 1371193. The next prime is 1371217. The reversal of 1371216 is 6121731.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1371192 and 1371201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25846 + ... + 25898.

2^1371216 is an apocalyptic number.

1371216 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 1371216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2290032).

1371216 is an abundant number, since it is smaller than the sum of its proper divisors (3208848).

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

1371216 is a wasteful number, since it uses less digits than its factorization.

1371216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 76 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 1371216 is about 1170.9893253143. The cubic root of 1371216 is about 111.0969042576.

Adding to 1371216 its reverse (6121731), we get a palindrome (7492947).

The spelling of 1371216 in words is "one million, three hundred seventy-one thousand, two hundred sixteen".