2678140 has 24 divisors (see below), whose sum is σ = 5654880. Its totient is φ = 1065408.

The previous prime is 2678131. The next prime is 2678141. The reversal of 2678140 is 418762.

It is a junction number, because it is equal to n+sod(n) for n = 2678099 and 2678108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678141) 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, 6994 + ... + 7366.

It is an arithmetic number, because the mean of its divisors is an integer number (235620).

2^2678140 is an apocalyptic number.

2678140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2678140 is an abundant number, since it is smaller than the sum of its proper divisors (2976740).

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

2678140 is a wasteful number, since it uses less digits than its factorization.

2678140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 739 counting only the distinct ones).

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

The square root of 2678140 is about 1636.5023678565. The cubic root of 2678140 is about 138.8708494497.

The spelling of 2678140 in words is "two million, six hundred seventy-eight thousand, one hundred forty".