1081216 has 16 divisors (see below), whose sum is σ = 2154240. Its totient is φ = 540544.

The previous prime is 1081163. The next prime is 1081219. The reversal of 1081216 is 6121801.

1081216 is nontrivially palindromic in base 15.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 1081193 and 1081202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4096 + ... + 4351.

It is an arithmetic number, because the mean of its divisors is an integer number (134640).

2^1081216 is an apocalyptic number.

1081216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1081216 is a deficient number, since it is larger than the sum of its proper divisors (1073024).

1081216 is an frugal number, since it uses more digits than its factorization.

1081216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8461 (or 8449 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1081216 is about 1039.8153682265. The cubic root of 1081216 is about 102.6370484830.

It can be divided in two parts, 108 and 1216, that multiplied together give a triangular number (131328 = T₅₁₂).

The spelling of 1081216 in words is "one million, eighty-one thousand, two hundred sixteen".