216677232 has 60 divisors (see below), whose sum is σ = 614965104. Its totient is φ = 71205120.

The previous prime is 216677221. The next prime is 216677233. The reversal of 216677232 is 232776612.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216677233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373 + ... + 20820.

Almost surely, 2^216677232 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 216677232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307482552).

216677232 is an abundant number, since it is smaller than the sum of its proper divisors (398287872).

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

216677232 is a wasteful number, since it uses less digits than its factorization.

216677232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21278 (or 21269 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 216677232 is about 14719.9603260335. The cubic root of 216677232 is about 600.6264124515.

The spelling of 216677232 in words is "two hundred sixteen million, six hundred seventy-seven thousand, two hundred thirty-two".