8278442 has 4 divisors (see below), whose sum is σ = 12417666. Its totient is φ = 4139220.

The previous prime is 8278421. The next prime is 8278477. The reversal of 8278442 is 2448728.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7392961 + 885481 = 2719^2 + 941^2 .

It is an unprimeable number.

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, 2069609 + ... + 2069612.

Almost surely, 2^8278442 is an apocalyptic number.

8278442 is a deficient number, since it is larger than the sum of its proper divisors (4139224).

8278442 is a wasteful number, since it uses less digits than its factorization.

8278442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139223.

The product of its digits is 28672, while the sum is 35.

The square root of 8278442 is about 2877.2281800372. The cubic root of 8278442 is about 202.2939386355.

The spelling of 8278442 in words is "eight million, two hundred seventy-eight thousand, four hundred forty-two".