8218278 has 12 divisors (see below), whose sum is σ = 17806308. Its totient is φ = 2739420.

The previous prime is 8218277. The next prime is 8218307. The reversal of 8218278 is 8728128.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228268 + ... + 228303.

It is an arithmetic number, because the mean of its divisors is an integer number (1483859).

Almost surely, 2^8218278 is an apocalyptic number.

8218278 is an abundant number, since it is smaller than the sum of its proper divisors (9588030).

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

8218278 is a wasteful number, since it uses less digits than its factorization.

8218278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456579 (or 456576 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 8218278 is about 2866.7539134010. The cubic root of 8218278 is about 201.8026861290.

The spelling of 8218278 in words is "eight million, two hundred eighteen thousand, two hundred seventy-eight".