6478280 has 16 divisors (see below), whose sum is σ = 14576220. Its totient is φ = 2591296.

The previous prime is 6478279. The next prime is 6478301. The reversal of 6478280 is 828746.

It can be written as a sum of positive squares in 2 ways, for example, as 6120676 + 357604 = 2474^2 + 598^2 .

It is a super-2 number, since 2×6478280² = 83936223516800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6478280.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80939 + ... + 81018.

Almost surely, 2^6478280 is an apocalyptic number.

It is an amenable number.

6478280 is an abundant number, since it is smaller than the sum of its proper divisors (8097940).

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

6478280 is a wasteful number, since it uses less digits than its factorization.

6478280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161968 (or 161964 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 6478280 is about 2545.2465499436. The cubic root of 6478280 is about 186.4174537127.

The spelling of 6478280 in words is "six million, four hundred seventy-eight thousand, two hundred eighty".