1398216 has 64 divisors (see below), whose sum is σ = 3888000. Its totient is φ = 416768.

The previous prime is 1398211. The next prime is 1398217. The reversal of 1398216 is 6128931.

It is not an unprimeable number, because it can be changed into a prime (1398211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9310 + ... + 9458.

It is an arithmetic number, because the mean of its divisors is an integer number (60750).

2^1398216 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 1398216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944000).

1398216 is an abundant number, since it is smaller than the sum of its proper divisors (2489784).

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

1398216 is a wasteful number, since it uses less digits than its factorization.

1398216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 194 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 1398216 is about 1182.4618387077. The cubic root of 1398216 is about 111.8213563656.

The spelling of 1398216 in words is "one million, three hundred ninety-eight thousand, two hundred sixteen".