216403630 has 8 divisors (see below), whose sum is σ = 389526552. Its totient is φ = 86561448.

The previous prime is 216403613. The next prime is 216403633. The reversal of 216403630 is 36304612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 216403595 and 216403604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216403633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10820172 + ... + 10820191.

It is an arithmetic number, because the mean of its divisors is an integer number (48690819).

Almost surely, 2^216403630 is an apocalyptic number.

216403630 is a deficient number, since it is larger than the sum of its proper divisors (173122922).

216403630 is a wasteful number, since it uses less digits than its factorization.

216403630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21640370.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 216403630 is about 14710.6638191483. The cubic root of 216403630 is about 600.3734989308.

The spelling of 216403630 in words is "two hundred sixteen million, four hundred three thousand, six hundred thirty".