8780740 has 24 divisors (see below), whose sum is σ = 18650520. Its totient is φ = 3472128.

The previous prime is 8780711. The next prime is 8780743. The reversal of 8780740 is 470878.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 8749764 = 176^2 + 2958^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8780696 and 8780705.

It is not an unprimeable number, because it can be changed into a prime (8780743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687 + ... + 4246.

It is an arithmetic number, because the mean of its divisors is an integer number (777105).

Almost surely, 2^8780740 is an apocalyptic number.

It is an amenable number.

8780740 is an abundant number, since it is smaller than the sum of its proper divisors (9869780).

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

8780740 is a wasteful number, since it uses less digits than its factorization.

8780740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031 (or 5029 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 8780740 is about 2963.2313443267. The cubic root of 8780740 is about 206.3052940208.

The spelling of 8780740 in words is "eight million, seven hundred eighty thousand, seven hundred forty".