8702240 has 48 divisors (see below), whose sum is σ = 20761272. Its totient is φ = 3446784.

The previous prime is 8702231. The next prime is 8702251. The reversal of 8702240 is 422078.

It can be written as a sum of positive squares in 4 ways, for example, as 7772944 + 929296 = 2788^2 + 964^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21722 + ... + 22118.

Almost surely, 2^8702240 is an apocalyptic number.

8702240 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 8702240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10380636).

8702240 is an abundant number, since it is smaller than the sum of its proper divisors (12059032).

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

8702240 is a wasteful number, since it uses less digits than its factorization.

8702240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 8702240 is about 2949.9559318742. The cubic root of 8702240 is about 205.6886615644.

The spelling of 8702240 in words is "eight million, seven hundred two thousand, two hundred forty".