7830280 has 32 divisors (see below), whose sum is σ = 18547200. Its totient is φ = 2966976.

The previous prime is 7830271. The next prime is 7830283. The reversal of 7830280 is 820387.

It is a happy number.

It is a super-2 number, since 2×7830280² = 122626569756800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7830283) 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 in 7 ways as a sum of consecutive naturals, for example, 4392 + ... + 5911.

It is an arithmetic number, because the mean of its divisors is an integer number (579600).

Almost surely, 2^7830280 is an apocalyptic number.

It is an amenable number.

7830280 is an abundant number, since it is smaller than the sum of its proper divisors (10716920).

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

7830280 is a wasteful number, since it uses less digits than its factorization.

7830280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10333 (or 10329 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 7830280 is about 2798.2637473977. The cubic root of 7830280 is about 198.5755453981.

The spelling of 7830280 in words is "seven million, eight hundred thirty thousand, two hundred eighty".