216773340 has 48 divisors (see below), whose sum is σ = 693676032. Its totient is φ = 49548096.

The previous prime is 216773327. The next prime is 216773377. The reversal of 216773340 is 43377612.

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 15 ways as a sum of consecutive naturals, for example, 257644 + ... + 258483.

It is an arithmetic number, because the mean of its divisors is an integer number (14451584).

Almost surely, 2^216773340 is an apocalyptic number.

216773340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216773340 is an abundant number, since it is smaller than the sum of its proper divisors (476902692).

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

216773340 is a wasteful number, since it uses less digits than its factorization.

216773340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516146 (or 516144 counting only the distinct ones).

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

The square root of 216773340 is about 14723.2245109555. The cubic root of 216773340 is about 600.7152026920.

The spelling of 216773340 in words is "two hundred sixteen million, seven hundred seventy-three thousand, three hundred forty".