8398278 has 24 divisors (see below), whose sum is σ = 20796048. Its totient is φ = 2399472.

The previous prime is 8398277. The next prime is 8398301. The reversal of 8398278 is 8728938.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8398277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33201 + ... + 33452.

It is an arithmetic number, because the mean of its divisors is an integer number (866502).

Almost surely, 2^8398278 is an apocalyptic number.

8398278 is an abundant number, since it is smaller than the sum of its proper divisors (12397770).

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

8398278 is a wasteful number, since it uses less digits than its factorization.

8398278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66668 (or 66665 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 8398278 is about 2897.9782607880. The cubic root of 8398278 is about 203.2653796635.

The spelling of 8398278 in words is "eight million, three hundred ninety-eight thousand, two hundred seventy-eight".