216303774 has 8 divisors (see below), whose sum is σ = 432607560. Its totient is φ = 72101256.

The previous prime is 216303761. The next prime is 216303781. The reversal of 216303774 is 477303612.

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

216303774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18025309 + ... + 18025320.

It is an arithmetic number, because the mean of its divisors is an integer number (54075945).

Almost surely, 2^216303774 is an apocalyptic number.

216303774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

216303774 is a wasteful number, since it uses less digits than its factorization.

216303774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36050634.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 216303774 is about 14707.2694270555. The cubic root of 216303774 is about 600.2811404684.

The spelling of 216303774 in words is "two hundred sixteen million, three hundred three thousand, seven hundred seventy-four".