8280442 has 8 divisors (see below), whose sum is σ = 12723732. Its totient is φ = 4039200.

The previous prime is 8280439. The next prime is 8280449. The reversal of 8280442 is 2440828.

It can be written as a sum of positive squares in 2 ways, for example, as 5387041 + 2893401 = 2321^2 + 1701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8280442.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8280449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50409 + ... + 50572.

Almost surely, 2^8280442 is an apocalyptic number.

8280442 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

8280442 is a deficient number, since it is larger than the sum of its proper divisors (4443290).

8280442 is a wasteful number, since it uses less digits than its factorization.

8280442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101024.

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 8280442 is about 2877.5757157719. The cubic root of 8280442 is about 202.3102281459.

Subtracting from 8280442 its product of nonzero digits (4096), we obtain a triangular number (8276346 = T₄₀₆₈).

The spelling of 8280442 in words is "eight million, two hundred eighty thousand, four hundred forty-two".