2678720 has 56 divisors (see below), whose sum is σ = 6967728. Its totient is φ = 972800.

The previous prime is 2678719. The next prime is 2678729. The reversal of 2678720 is 278762.

2678720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678729) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3140 + ... + 3900.

2^2678720 is an apocalyptic number.

2678720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2678720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3483864).

2678720 is an abundant number, since it is smaller than the sum of its proper divisors (4289008).

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

2678720 is a wasteful number, since it uses less digits than its factorization.

2678720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 2678720 is about 1636.6795654617. The cubic root of 2678720 is about 138.8808737301.

The spelling of 2678720 in words is "two million, six hundred seventy-eight thousand, seven hundred twenty".