2678040 has 96 divisors (see below), whose sum is σ = 8957520. Its totient is φ = 693504.

The previous prime is 2678017. The next prime is 2678041. The reversal of 2678040 is 408762.

2678040 = 142² + 143² + ... + 221².

It is a junction number, because it is equal to n+sod(n) for n = 2677995 and 2678013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15394 + ... + 15566.

2^2678040 is an apocalyptic number.

2678040 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 2678040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4478760).

2678040 is an abundant number, since it is smaller than the sum of its proper divisors (6279480).

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

2678040 is a wasteful number, since it uses less digits than its factorization.

2678040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2678040 is about 1636.4718146060. The cubic root of 2678040 is about 138.8691209792.

The spelling of 2678040 in words is "two million, six hundred seventy-eight thousand, forty".