218049776 has 60 divisors (see below), whose sum is σ = 509668272. Its totient is φ = 88515072.

The previous prime is 218049763. The next prime is 218049787. The reversal of 218049776 is 677940812.

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 11 ways as a sum of consecutive naturals, for example, 37736 + ... + 43128.

Almost surely, 2^218049776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218049776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254834136).

218049776 is an abundant number, since it is smaller than the sum of its proper divisors (291618496).

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

218049776 is a wasteful number, since it uses less digits than its factorization.

218049776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5446 (or 5421 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 218049776 is about 14766.5085920809. The cubic root of 218049776 is about 601.8919685616.

The spelling of 218049776 in words is "two hundred eighteen million, forty-nine thousand, seven hundred seventy-six".