818339240 has 32 divisors (see below), whose sum is σ = 1900661760. Its totient is φ = 316776000.

The previous prime is 818339233. The next prime is 818339243. The reversal of 818339240 is 42933818.

818339240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×818339240³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 818339194 and 818339203.

It is not an unprimeable number, because it can be changed into a prime (818339243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328736 + ... + 331215.

It is an arithmetic number, because the mean of its divisors is an integer number (59395680).

Almost surely, 2^818339240 is an apocalyptic number.

It is an amenable number.

818339240 is an abundant number, since it is smaller than the sum of its proper divisors (1082322520).

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

818339240 is a wasteful number, since it uses less digits than its factorization.

818339240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659993 (or 659989 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 818339240 is about 28606.6293016147. The cubic root of 818339240 is about 935.3578429540.

The spelling of 818339240 in words is "eight hundred eighteen million, three hundred thirty-nine thousand, two hundred forty".