8820420 has 48 divisors (see below), whose sum is σ = 28226688. Its totient is φ = 2016000.

The previous prime is 8820397. The next prime is 8820421. The reversal of 8820420 is 240288.

It is not an unprimeable number, because it can be changed into a prime (8820421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10081 + ... + 10920.

It is an arithmetic number, because the mean of its divisors is an integer number (588056).

Almost surely, 2^8820420 is an apocalyptic number.

It is an amenable number.

8820420 is an abundant number, since it is smaller than the sum of its proper divisors (19406268).

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

8820420 is a wasteful number, since it uses less digits than its factorization.

8820420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21020 (or 21018 counting only the distinct ones).

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

The square root of 8820420 is about 2969.9191908198. The cubic root of 8820420 is about 206.6155903377.

The spelling of 8820420 in words is "eight million, eight hundred twenty thousand, four hundred twenty".