8820045 has 24 divisors (see below), whose sum is σ = 16465176. Its totient is φ = 4341888.

The previous prime is 8820041. The next prime is 8820073. The reversal of 8820045 is 5400288.

It can be written as a sum of positive squares in 4 ways, for example, as 281961 + 8538084 = 531^2 + 2922^2 .

It is not a de Polignac number, because 8820045 - 2² = 8820041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8820041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6954 + ... + 8123.

It is an arithmetic number, because the mean of its divisors is an integer number (686049).

Almost surely, 2^8820045 is an apocalyptic number.

It is an amenable number.

8820045 is a deficient number, since it is larger than the sum of its proper divisors (7645131).

8820045 is a wasteful number, since it uses less digits than its factorization.

8820045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15101 (or 15098 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 8820045 is about 2969.8560571179. The cubic root of 8820045 is about 206.6126622102.

The spelling of 8820045 in words is "eight million, eight hundred twenty thousand, forty-five".