6720280 has 32 divisors (see below), whose sum is σ = 17281440. Its totient is φ = 2304000.

The previous prime is 6720271. The next prime is 6720283. The reversal of 6720280 is 820276.

It is a Smith number, since the sum of its digits (25) 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 (6720283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11721 + ... + 12280.

It is an arithmetic number, because the mean of its divisors is an integer number (540045).

Almost surely, 2^6720280 is an apocalyptic number.

It is an amenable number.

6720280 is an abundant number, since it is smaller than the sum of its proper divisors (10561160).

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

6720280 is a wasteful number, since it uses less digits than its factorization.

6720280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24019 (or 24015 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 6720280 is about 2592.3502849731. The cubic root of 6720280 is about 188.7103801174.

The spelling of 6720280 in words is "six million, seven hundred twenty thousand, two hundred eighty".