8887720 has 16 divisors (see below), whose sum is σ = 19997460. Its totient is φ = 3555072.

The previous prime is 8887699. The next prime is 8887721. The reversal of 8887720 is 277888.

8887720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8726116 + 161604 = 2954^2 + 402^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 222193 = 8887720 / (8 + 8 + 8 + 7 + 7 + 2 + 0).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (8887721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111057 + ... + 111136.

Almost surely, 2^8887720 is an apocalyptic number.

It is an amenable number.

8887720 is an abundant number, since it is smaller than the sum of its proper divisors (11109740).

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

8887720 is a wasteful number, since it uses less digits than its factorization.

8887720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222204 (or 222200 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 8887720 is about 2981.2279349288. The cubic root of 8887720 is about 207.1397533083.

The spelling of 8887720 in words is "eight million, eight hundred eighty-seven thousand, seven hundred twenty".