216326448 has 120 divisors (see below), whose sum is σ = 661332672. Its totient is φ = 65608704.

The previous prime is 216326447. The next prime is 216326449. The reversal of 216326448 is 844623612.

216326448 is a `hidden beast` number, since 2 + 1 + 6 + 3 + 2 + 644 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (216326447) and next prime (216326449).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (216326441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135865 + ... + 137447.

Almost surely, 2^216326448 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 216326448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330666336).

216326448 is an abundant number, since it is smaller than the sum of its proper divisors (445006224).

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

216326448 is a wasteful number, since it uses less digits than its factorization.

216326448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683 (or 1674 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 216326448 is about 14708.0402501489. The cubic root of 216326448 is about 600.3021145192.

The spelling of 216326448 in words is "two hundred sixteen million, three hundred twenty-six thousand, four hundred forty-eight".