216352944 has 100 divisors (see below), whose sum is σ = 631218280. Its totient is φ = 71539200.

The previous prime is 216352889. The next prime is 216352957. The reversal of 216352944 is 449253612.

It is a happy number.

216352944 is a `hidden beast` number, since 216 + 352 + 94 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 216352899 and 216352908.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 179544 + ... + 180744.

Almost surely, 2^216352944 is an apocalyptic number.

216352944 is a gapful number since it is divisible by the number (24) 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 216352944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315609140).

216352944 is an abundant number, since it is smaller than the sum of its proper divisors (414865336).

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

216352944 is a wasteful number, since it uses less digits than its factorization.

216352944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1345 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 216352944 is about 14708.9409543991. The cubic root of 216352944 is about 600.3266221643.

The spelling of 216352944 in words is "two hundred sixteen million, three hundred fifty-two thousand, nine hundred forty-four".