8740820 has 48 divisors (see below), whose sum is σ = 20357568. Its totient is φ = 3125760.

The previous prime is 8740807. The next prime is 8740841. The reversal of 8740820 is 280478.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14444 + ... + 15036.

It is an arithmetic number, because the mean of its divisors is an integer number (424116).

Almost surely, 2^8740820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8740820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10178784).

8740820 is an abundant number, since it is smaller than the sum of its proper divisors (11616748).

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

8740820 is a wasteful number, since it uses less digits than its factorization.

8740820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 8740820 is about 2956.4877811349. The cubic root of 8740820 is about 205.9921761568.

The spelling of 8740820 in words is "eight million, seven hundred forty thousand, eight hundred twenty".