840218330 has 32 divisors (see below), whose sum is σ = 1770612480. Its totient is φ = 281047680.

The previous prime is 840218329. The next prime is 840218341. The reversal of 840218330 is 33812048.

It is a happy number.

840218330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 840218293 and 840218302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143510 + ... + 149249.

It is an arithmetic number, because the mean of its divisors is an integer number (55331640).

Almost surely, 2^840218330 is an apocalyptic number.

840218330 is an abundant number, since it is smaller than the sum of its proper divisors (930394150).

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

840218330 is a wasteful number, since it uses less digits than its factorization.

840218330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292814.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 840218330 is about 28986.5197980027. The cubic root of 840218330 is about 943.6205361348.

The spelling of 840218330 in words is "eight hundred forty million, two hundred eighteen thousand, three hundred thirty".