8280842 has 4 divisors (see below), whose sum is σ = 12421266. Its totient is φ = 4140420.

The previous prime is 8280841. The next prime is 8280911. The reversal of 8280842 is 2480828.

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., 7623121 + 657721 = 2761^2 + 811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8280799 and 8280808.

It is not an unprimeable number, because it can be changed into a prime (8280841) 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, 2070209 + ... + 2070212.

Almost surely, 2^8280842 is an apocalyptic number.

8280842 is a deficient number, since it is larger than the sum of its proper divisors (4140424).

8280842 is a wasteful number, since it uses less digits than its factorization.

8280842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140423.

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 8280842 is about 2877.6452178821. The cubic root of 8280842 is about 202.3134857332.

The spelling of 8280842 in words is "eight million, two hundred eighty thousand, eight hundred forty-two".