1217016 has 24 divisors (see below), whose sum is σ = 3296280. Its totient is φ = 405648.

The previous prime is 1217009. The next prime is 1217017. The reversal of 1217016 is 6107121.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1217016² = 2962255888512, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1217016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8380 + ... + 8523.

It is an arithmetic number, because the mean of its divisors is an integer number (137345).

2^1217016 is an apocalyptic number.

It is an amenable number.

1217016 is an abundant number, since it is smaller than the sum of its proper divisors (2079264).

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

1217016 is a wasteful number, since it uses less digits than its factorization.

1217016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16915 (or 16908 counting only the distinct ones).

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

The square root of 1217016 is about 1103.1844813992. The cubic root of 1217016 is about 106.7657846042.

The spelling of 1217016 in words is "one million, two hundred seventeen thousand, sixteen".