216916430 has 16 divisors (see below), whose sum is σ = 413417520. Its totient is φ = 81662592.

The previous prime is 216916339. The next prime is 216916487. The reversal of 216916430 is 34619612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637820 + ... + 638159.

It is an arithmetic number, because the mean of its divisors is an integer number (25838595).

Almost surely, 2^216916430 is an apocalyptic number.

216916430 is a deficient number, since it is larger than the sum of its proper divisors (196501090).

216916430 is a wasteful number, since it uses less digits than its factorization.

216916430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276003.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 216916430 is about 14728.0830388751. The cubic root of 216916430 is about 600.8473490656.

The spelling of 216916430 in words is "two hundred sixteen million, nine hundred sixteen thousand, four hundred thirty".