2678520 has 128 divisors (see below), whose sum is σ = 9253440. Its totient is φ = 614400.

The previous prime is 2678519. The next prime is 2678539. The reversal of 2678520 is 258762.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 26470 + ... + 26570.

2^2678520 is an apocalyptic number.

2678520 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 2678520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4626720).

2678520 is an abundant number, since it is smaller than the sum of its proper divisors (6574920).

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

2678520 is a wasteful number, since it uses less digits than its factorization.

2678520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2678520 is about 1636.6184650064. The cubic root of 2678520 is about 138.8774172451.

The spelling of 2678520 in words is "two million, six hundred seventy-eight thousand, five hundred twenty".