818711040 has 320 divisors, whose sum is σ = 3041305344. Its totient is φ = 184025088.

The previous prime is 818711039. The next prime is 818711057. The reversal of 818711040 is 40117818.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 818710989 and 818711007.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5214642 + ... + 5214798.

Almost surely, 2^818711040 is an apocalyptic number.

818711040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818711040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520652672).

818711040 is an abundant number, since it is smaller than the sum of its proper divisors (2222594304).

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

818711040 is a wasteful number, since it uses less digits than its factorization.

818711040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 818711040 is about 28613.1270573490. The cubic root of 818711040 is about 935.4994767146.

Adding to 818711040 its reverse (40117818), we get a palindrome (858828858).

The spelling of 818711040 in words is "eight hundred eighteen million, seven hundred eleven thousand, forty".