1113216 has 64 divisors (see below), whose sum is σ = 3198720. Its totient is φ = 340992.

The previous prime is 1113199. The next prime is 1113221. The reversal of 1113216 is 6123111.

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

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 = 1113195 and 1113204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4881 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (49980).

2^1113216 is an apocalyptic number.

1113216 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 1113216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599360).

1113216 is an abundant number, since it is smaller than the sum of its proper divisors (2085504).

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

1113216 is a wasteful number, since it uses less digits than its factorization.

1113216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 241 counting only the distinct ones).

The product of its digits is 36, while the sum is 15.

The square root of 1113216 is about 1055.0905174439. The cubic root of 1113216 is about 103.6397794000.

Adding to 1113216 its reverse (6123111), we get a palindrome (7236327).

The spelling of 1113216 in words is "one million, one hundred thirteen thousand, two hundred sixteen".