8720010 has 96 divisors (see below), whose sum is σ = 25356240. Its totient is φ = 2064384.

The previous prime is 8719999. The next prime is 8720027. The reversal of 8720010 is 100278.

It can be written as a sum of positive squares in 8 ways, for example, as 5022081 + 3697929 = 2241^2 + 1923^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33802 + ... + 34058.

Almost surely, 2^8720010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8720010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12678120).

8720010 is an abundant number, since it is smaller than the sum of its proper divisors (16636230).

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

8720010 is a wasteful number, since it uses less digits than its factorization.

8720010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 8720010 is about 2952.9663052598. The cubic root of 8720010 is about 205.8285719949.

Adding to 8720010 its reverse (100278), we get a palindrome (8820288).

The spelling of 8720010 in words is "eight million, seven hundred twenty thousand, ten".