216300630 has 64 divisors (see below), whose sum is σ = 638926848. Its totient is φ = 45636480.

The previous prime is 216300629. The next prime is 216300661. The reversal of 216300630 is 36003612.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 216300597 and 216300606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36886 + ... + 42345.

It is an arithmetic number, because the mean of its divisors is an integer number (9983232).

Almost surely, 2^216300630 is an apocalyptic number.

216300630 is an abundant number, since it is smaller than the sum of its proper divisors (422626218).

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

216300630 is a wasteful number, since it uses less digits than its factorization.

216300630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79261.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 216300630 is about 14707.1625407486. The cubic root of 216300630 is about 600.2782320694.

The spelling of 216300630 in words is "two hundred sixteen million, three hundred thousand, six hundred thirty".