218055376 has 80 divisors (see below), whose sum is σ = 529251840. Its totient is φ = 84551040.

The previous prime is 218055373. The next prime is 218055377. The reversal of 218055376 is 673550812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218055371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466695 + ... + 467161.

It is an arithmetic number, because the mean of its divisors is an integer number (6615648).

Almost surely, 2^218055376 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 218055376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264625920).

218055376 is an abundant number, since it is smaller than the sum of its proper divisors (311196464).

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

218055376 is a wasteful number, since it uses less digits than its factorization.

218055376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 218055376 is about 14766.6982091461. The cubic root of 218055376 is about 601.8971211560.

The spelling of 218055376 in words is "two hundred eighteen million, fifty-five thousand, three hundred seventy-six".