8705234240 has 28 divisors (see below), whose sum is σ = 20729339796. Its totient is φ = 3482093568.

The previous prime is 8705234233. The next prime is 8705234273. The reversal of 8705234240 is 424325078.

It can be written as a sum of positive squares in 2 ways, for example, as 4664343616 + 4040890624 = 68296^2 + 63568^2 .

It is a super-2 number, since 2×8705234240² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8705234240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13601609 + ... + 13602248.

Almost surely, 2^8705234240 is an apocalyptic number.

8705234240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8705234240 is an abundant number, since it is smaller than the sum of its proper divisors (12024105556).

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

8705234240 is a wasteful number, since it uses less digits than its factorization.

8705234240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27203874 (or 27203864 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 8705234240 is about 93301.8447834768. The cubic root of 8705234240 is about 2057.1224976674.

The spelling of 8705234240 in words is "eight billion, seven hundred five million, two hundred thirty-four thousand, two hundred forty".