1140216 has 64 divisors (see below), whose sum is σ = 3559680. Its totient is φ = 295680.

The previous prime is 1140203. The next prime is 1140233. The reversal of 1140216 is 6120411.

It is a junction number, because it is equal to n+sod(n) for n = 1140195 and 1140204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1540 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (55620).

2^1140216 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 1140216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1779840).

1140216 is an abundant number, since it is smaller than the sum of its proper divisors (2419464).

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

1140216 is a wasteful number, since it uses less digits than its factorization.

1140216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1140216 is about 1067.8089716799. The cubic root of 1140216 is about 104.4709900167.

Adding to 1140216 its reverse (6120411), we get a palindrome (7260627).

The spelling of 1140216 in words is "one million, one hundred forty thousand, two hundred sixteen".