1216338 has 16 divisors (see below), whose sum is σ = 2498880. Its totient is φ = 394416.

The previous prime is 1216337. The next prime is 1216339. The reversal of 1216338 is 8336121.

It is an interprime number because it is at equal distance from previous prime (1216337) and next prime (1216339).

It is not an unprimeable number, because it can be changed into a prime (1216337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2518 + ... + 2961.

It is an arithmetic number, because the mean of its divisors is an integer number (156180).

2^1216338 is an apocalyptic number.

1216338 is an abundant number, since it is smaller than the sum of its proper divisors (1282542).

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

1216338 is a wasteful number, since it uses less digits than its factorization.

1216338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521.

The product of its digits is 864, while the sum is 24.

The square root of 1216338 is about 1102.8771463767. The cubic root of 1216338 is about 106.7459545037.

The spelling of 1216338 in words is "one million, two hundred sixteen thousand, three hundred thirty-eight".