216159328 has 96 divisors (see below), whose sum is σ = 545142528. Its totient is φ = 81907200.

The previous prime is 216159319. The next prime is 216159329. The reversal of 216159328 is 823951612.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216159329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89983 + ... + 92353.

It is an arithmetic number, because the mean of its divisors is an integer number (5678568).

Almost surely, 2^216159328 is an apocalyptic number.

216159328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216159328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272571264).

216159328 is an abundant number, since it is smaller than the sum of its proper divisors (328983200).

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

216159328 is a wasteful number, since it uses less digits than its factorization.

216159328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436 (or 2428 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 216159328 is about 14702.3579061319. The cubic root of 216159328 is about 600.1474896676.

The spelling of 216159328 in words is "two hundred sixteen million, one hundred fifty-nine thousand, three hundred twenty-eight".