8218436 has 6 divisors (see below), whose sum is σ = 14382270. Its totient is φ = 4109216.

The previous prime is 8218433. The next prime is 8218439. The reversal of 8218436 is 6348128.

It is an interprime number because it is at equal distance from previous prime (8218433) and next prime (8218439).

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 688900 = 2744^2 + 830^2 .

It is not an unprimeable number, because it can be changed into a prime (8218433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027301 + ... + 1027308.

It is an arithmetic number, because the mean of its divisors is an integer number (2397045).

Almost surely, 2^8218436 is an apocalyptic number.

It is an amenable number.

8218436 is a deficient number, since it is larger than the sum of its proper divisors (6163834).

8218436 is a wasteful number, since it uses less digits than its factorization.

8218436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054613 (or 2054611 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 8218436 is about 2866.7814705694. The cubic root of 8218436 is about 201.8039793691.

The spelling of 8218436 in words is "eight million, two hundred eighteen thousand, four hundred thirty-six".