8780538 has 16 divisors (see below), whose sum is σ = 18912096. Its totient is φ = 2701680.

The previous prime is 8780531. The next prime is 8780543. The reversal of 8780538 is 8350878.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8780496 and 8780505.

It is not an unprimeable number, because it can be changed into a prime (8780531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56208 + ... + 56363.

It is an arithmetic number, because the mean of its divisors is an integer number (1182006).

Almost surely, 2^8780538 is an apocalyptic number.

8780538 is an abundant number, since it is smaller than the sum of its proper divisors (10131558).

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

8780538 is a wasteful number, since it uses less digits than its factorization.

8780538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112589.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 8780538 is about 2963.1972597180. The cubic root of 8780538 is about 206.3037119982.

The spelling of 8780538 in words is "eight million, seven hundred eighty thousand, five hundred thirty-eight".