8813820 has 48 divisors (see below), whose sum is σ = 26133408. Its totient is φ = 2211840.

The previous prime is 8813789. The next prime is 8813821. The reversal of 8813820 is 283188.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8813821) 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, 3301 + ... + 5340.

It is an arithmetic number, because the mean of its divisors is an integer number (544446).

Almost surely, 2^8813820 is an apocalyptic number.

It is an amenable number.

8813820 is an abundant number, since it is smaller than the sum of its proper divisors (17319588).

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

8813820 is a wasteful number, since it uses less digits than its factorization.

8813820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670 (or 8668 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 8813820 is about 2968.8078415418. The cubic root of 8813820 is about 206.5640431641.

The spelling of 8813820 in words is "eight million, eight hundred thirteen thousand, eight hundred twenty".