8402820 has 48 divisors (see below), whose sum is σ = 24554880. Its totient is φ = 2142976.

The previous prime is 8402803. The next prime is 8402831. The reversal of 8402820 is 282048.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665 + ... + 4424.

It is an arithmetic number, because the mean of its divisors is an integer number (511560).

Almost surely, 2^8402820 is an apocalyptic number.

It is an amenable number.

8402820 is an abundant number, since it is smaller than the sum of its proper divisors (16152060).

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

8402820 is a wasteful number, since it uses less digits than its factorization.

8402820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124 (or 6122 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 8402820 is about 2898.7618046331. The cubic root of 8402820 is about 203.3020167363.

Adding to 8402820 its reverse (282048), we get a palindrome (8684868).

It can be divided in two parts, 84028 and 20, that added together give a palindrome (84048).

The spelling of 8402820 in words is "eight million, four hundred two thousand, eight hundred twenty".