8470820 has 12 divisors (see below), whose sum is σ = 17788764. Its totient is φ = 3388320.

The previous prime is 8470801. The next prime is 8470829. The reversal of 8470820 is 280748.

8470820 is digitally balanced in base 5, 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 1700416 + 6770404 = 1304^2 + 2602^2 .

It is not an unprimeable number, because it can be changed into a prime (8470829) 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, 211751 + ... + 211790.

It is an arithmetic number, because the mean of its divisors is an integer number (1482397).

Almost surely, 2^8470820 is an apocalyptic number.

It is an amenable number.

8470820 is an abundant number, since it is smaller than the sum of its proper divisors (9317944).

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

8470820 is a wasteful number, since it uses less digits than its factorization.

8470820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423550 (or 423548 counting only the distinct ones).

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

The square root of 8470820 is about 2910.4673164288. The cubic root of 8470820 is about 203.8489526503.

The spelling of 8470820 in words is "eight million, four hundred seventy thousand, eight hundred twenty".