8278742 has 16 divisors (see below), whose sum is σ = 12703392. Its totient is φ = 4045440.

The previous prime is 8278729. The next prime is 8278763. The reversal of 8278742 is 2478728.

It is a junction number, because it is equal to n+sod(n) for n = 8278696 and 8278705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24398 + ... + 24734.

It is an arithmetic number, because the mean of its divisors is an integer number (793962).

Almost surely, 2^8278742 is an apocalyptic number.

8278742 is a deficient number, since it is larger than the sum of its proper divisors (4424650).

8278742 is a wasteful number, since it uses less digits than its factorization.

8278742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583.

The product of its digits is 50176, while the sum is 38.

The square root of 8278742 is about 2877.2803130734. The cubic root of 8278742 is about 202.2963822293.

The spelling of 8278742 in words is "eight million, two hundred seventy-eight thousand, seven hundred forty-two".