1017216 has 48 divisors (see below), whose sum is σ = 2930460. Its totient is φ = 338688.

The previous prime is 1017209. The next prime is 1017227. The reversal of 1017216 is 6127101.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711 + ... + 1593.

2^1017216 is an apocalyptic number.

1017216 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 1017216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1465230).

1017216 is an abundant number, since it is smaller than the sum of its proper divisors (1913244).

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

1017216 is an equidigital number, since it uses as much as digits as its factorization.

1017216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 1017216 is about 1008.5712666936. The cubic root of 1017216 is about 100.5706045781.

The spelling of 1017216 in words is "one million, seventeen thousand, two hundred sixteen".