218853340 has 36 divisors (see below), whose sum is σ = 464778216. Its totient is φ = 86564352.

The previous prime is 218853331. The next prime is 218853347. The reversal of 218853340 is 43358812.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 218853296 and 218853305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218853347) by changing a digit.

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, 187599 + ... + 188761.

It is an arithmetic number, because the mean of its divisors is an integer number (12910506).

Almost surely, 2^218853340 is an apocalyptic number.

218853340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218853340 is an abundant number, since it is smaller than the sum of its proper divisors (245924876).

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

218853340 is a wasteful number, since it uses less digits than its factorization.

218853340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 218853340 is about 14793.6925748780. The cubic root of 218853340 is about 602.6304326692.

The spelling of 218853340 in words is "two hundred eighteen million, eight hundred fifty-three thousand, three hundred forty".