216466744 has 32 divisors (see below), whose sum is σ = 437991120. Its totient is φ = 99703296.

The previous prime is 216466741. The next prime is 216466751. The reversal of 216466744 is 447664612.

It is a junction number, because it is equal to n+sod(n) for n = 216466697 and 216466706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216466741) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 56704 + ... + 60400.

Almost surely, 2^216466744 is an apocalyptic number.

It is an amenable number.

216466744 is an abundant number, since it is smaller than the sum of its proper divisors (221524376).

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

216466744 is a wasteful number, since it uses less digits than its factorization.

216466744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279 (or 4275 counting only the distinct ones).

The product of its digits is 193536, while the sum is 40.

The square root of 216466744 is about 14712.8088412784. The cubic root of 216466744 is about 600.4318594581.

The spelling of 216466744 in words is "two hundred sixteen million, four hundred sixty-six thousand, seven hundred forty-four".