216475314 has 64 divisors (see below), whose sum is σ = 517415040. Its totient is φ = 59601920.

The previous prime is 216475313. The next prime is 216475321. The reversal of 216475314 is 413574612.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216475313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29212 + ... + 35864.

It is an arithmetic number, because the mean of its divisors is an integer number (8084610).

Almost surely, 2^216475314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216475314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258707520).

216475314 is an abundant number, since it is smaller than the sum of its proper divisors (300939726).

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

216475314 is a wasteful number, since it uses less digits than its factorization.

216475314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6715.

The product of its digits is 20160, while the sum is 33.

The square root of 216475314 is about 14713.1000812201. The cubic root of 216475314 is about 600.4397831281.

The spelling of 216475314 in words is "two hundred sixteen million, four hundred seventy-five thousand, three hundred fourteen".